Search This Blog

Friday, November 23, 2018

Citizen science

From Wikipedia, the free encyclopedia
Citizen science (CS; also known as community science, crowd science, crowd-sourced science, civic science, volunteer monitoring, or networked science) is scientific research conducted, in whole or in part, by amateur (or nonprofessional) scientists. Citizen science is sometimes described as "public participation in scientific research," participatory monitoring, and participatory action research.
 
Scanning the cliffs near Logan Pass for mountain goats as part of the Glacier National Park Citizen Science Program

Definition

The term CS has multiple origins, as well as differing concepts. It was first defined independently in the mid-1990s by Rick Bonney in the United States and Alan Irwin in the United Kingdom. Alan Irwin, a British sociologist, defines CS as "developing concepts of scientific citizenship which foregrounds the necessity of opening up science and science policy processes to the public". Irwin sought to reclaim two dimensions of the relationship between citizens and science: 1) that science should be responsive to citizens' concerns and needs; and 2) that citizens themselves could produce reliable scientific knowledge. The American ornithologist Rick Bonney, unaware of Irwin's work, defined CS as projects in which nonscientists, such as amateur birdwatchers, voluntarily contributed scientific data. This describes a more limited role for citizens in scientific research than Irwin's conception of the term.

The terms citizen science and citizen scientists entered the Oxford English Dictionary (OED) in June 2014. "Citizen science" is defined as "scientific work undertaken by members of the general public, often in collaboration with or under the direction of professional scientists and scientific institutions". "Citizen scientist" is defined as: (a) "a scientist whose work is characterized by a sense of responsibility to serve the best interests of the wider community (now rare)"; or (b) "a member of the general public who engages in scientific work, often in collaboration with or under the direction of professional scientists and scientific institutions; an amateur scientist". The first use of the term "citizen scientist" can be found in the magazine New Scientist in an article about ufology from October 1979.

Muki Haklay cites, from a policy report for the Wilson Center entitled "Citizen Science and Policy: A European Perspective", an alternate first use of the term "citizen science" by R. Kerson in the magazine MIT Technology Review from January 1989. Quoting from the Wilson Center report: "The new form of engagement in science received the name 'citizen science'. The first recorded example of the use of the term is from 1989, describing how 225 volunteers across the US collected rain samples to assist the Audubon Society in an acid-rain awareness raising campaign."

A "Green Paper on Citizen Science" was published in 2013 by the European Commission's Digital Science Unit and Socientize.eu, which included a definition for CS, referring to "the general public engagement in scientific research activities when citizens actively contribute to science either with their intellectual effort or surrounding knowledge or with their tools and resources. Participants provide experimental data and facilities for researchers, raise new questions and co-create a new scientific culture."

Citizen science may be performed by individuals, teams, or networks of volunteers. Citizen scientists often partner with professional scientists to achieve common goals. Large volunteer networks often allow scientists to accomplish tasks that would be too expensive or time consuming to accomplish through other means.

Many citizen-science projects serve education and outreach goals. These projects may be designed for a formal classroom environment or an informal education environment such as museums.

Citizen science has evolved over the past four decades. Recent projects place more emphasis on scientifically sound practices and measurable goals for public education. Modern citizen science differs from its historical forms primarily in the access for, and subsequent scale of, public participation; technology is credited as one of the main drivers of the recent explosion of citizen science activity.

In March 2015, the Office of Science and Technology Policy published a factsheet entitled "Empowering Students and Others through Citizen Science and Crowdsourcing". Quoting: "Citizen science and crowdsourcing projects are powerful tools for providing students with skills needed to excel in science, technology, engineering, and math (STEM). Volunteers in citizen science, for example, gain hands-on experience doing real science, and in many cases take that learning outside of the traditional classroom setting".

Members of the Cascades Butterfly Citizen Science Team pictured on Sauk mountain

In May 2016, a new open-access journal was started by the Citizen Science Association along with Ubiquity Press called Citizen Science: Theory and Practice (CS:T&P). Quoting from the editorial article titled "The Theory and Practice of Citizen Science: Launching a New Journal", "CS:T&P provides the space to enhance the quality and impact of citizen science efforts by deeply exploring the citizen science concept in all its forms and across disciplines. By examining, critiquing, and sharing findings across a variety of citizen science endeavors, we can dig into the underpinnings and assumptions of citizen science and critically analyze its practice and outcomes."

Alternative definitions

Other definitions for citizen science have also been proposed. For example, Bruce Lewenstein of Cornell University's Communication and S&TS departments describes 3 possible definitions:
  • The participation of nonscientists in the process of gathering data according to specific scientific protocols and in the process of using and interpreting that data.
  • The engagement of nonscientists in true decision-making about policy issues that have technical or scientific components.
  • The engagement of research scientists in the democratic and policy process.
Scientists and scholars who have used other definitions include Frank N. von Hippel, Stephen Schneider, Neal Lane and Jon Beckwith. Other alternative terminologies proposed are "civic science" and "civic scientist".

Further, Muki Haklay offers an overview of the typologies of the level of citizen participation in citizen science, which range from "crowdsourcing" (level 1), where the citizen acts as a sensor, to "distributed intelligence" (level 2), where the citizen acts as a basic interpreter, to "participatory science", where citizens contribute to problem definition and data collection (level 3), to "extreme citizen science", which involves collaboration between the citizen and scientists in problem definition, collection and data analysis.

A 2014 Mashable article defines a citizen scientist as: "Anybody who voluntarily contributes his or her time and resources toward scientific research in partnership with professional scientists."

In 2016 the Australian Citizen Science Association released their definition which states "Citizen science involves public participation and collaboration in scientific research with the aim to increase scientific knowledge."

In 2016, the book "Analyzing the Role of Citizen Science in Modern Research" defined citizen science as "work undertaken by civic educators together with citizen communities to advance science, foster a broad scientific mentality, and/or encourage democratic engagement, which allows society to deal rationally with complex modern problems".

Related fields

In a Smart City era, Citizen Science relays on various web-based tools (eg.WebGIS) and becomes Cyber Citizen Science. Some projects, such as SETI@home, use the Internet to take advantage of distributed computing. These projects are generally passive. Computation tasks are performed by volunteers' computers and require little involvement beyond initial setup. There is disagreement as to whether these projects should be classified as citizen science.

The astrophysicist and Galaxy Zoo co-founder Kevin Schawinski stated: "We prefer to call this [Galaxy Zoo] citizen science because it's a better description of what you're doing; you're a regular citizen but you're doing science. Crowd sourcing sounds a bit like, well, you're just a member of the crowd and you're not; you're our collaborator. You're pro-actively involved in the process of science by participating."

Compared to SETI@home, "Galaxy Zoo volunteers do real work. They're not just passively running something on their computer and hoping that they'll be the first person to find aliens. They have a stake in science that comes out of it, which means that they are now interested in what we do with it, and what we find."

Citizen policy may be another result of citizen science initiatives. Bethany Brookshire (pen name SciCurious) writes: "If citizens are going to live with the benefits or potential consequences of science (as the vast majority of them will), it's incredibly important to make sure that they are not only well informed about changes and advances in science and technology, but that they also ... are able to ... influence the science policy decisions that could impact their lives."

Benefits and limitations

In a research report published by the National Park Service in 2008, Brett Amy Thelen and Rachel K. Thiet mention the following concerns, previously reported in the literature, about the validity of volunteer-generated data:
  • Some projects may not be suitable for volunteers, for instance, when they use complex research methods or require arduous or repetitive work;
  • If volunteers lack proper training in research and monitoring protocols, they are at risk of introducing bias into the data;
  • Members may lie about data. This risk is even greater when bounties are awarded as an incentive to participate.
The question of data accuracy, in particular, remains open. John Losey, who created the Lost Ladybug citizen science project, has argued that the cost-effectiveness of citizen science data can outweigh data quality issues, if properly managed.

In December 2016, authors M. Kosmala, A. Wiggins, A. Swanson and B. Simmons published a study in the journal Frontiers in Ecology and the Environment called "Assessing Data Quality in Citizen Science". The abstract describes how ecological and environmental CS projects have enormous potential to advance science. Also, CS projects can influence policy and guide resource management by producing datasets that are otherwise infeasible to generate. In the section "In a Nutshell" (pg3), four condensed conclusions are stated. They are:
  1. Datasets produced by volunteer CSs can have reliably high quality, on par with those produced by professionals.
  2. Individual volunteer accuracy varies, depending on task difficulty and volunteer experience. Multiple methods exist for boosting accuracy to required levels for a given project.
  3. Most types of bias found in CS datasets are also found in professionally produced datasets and can be accommodated using existing statistical tools.
  4. Reviewers of CS projects should look for iterated project design, standardization and appropriateness of volunteer protocols and data analyses, capture of metadata, and accuracy assessment.
They conclude that as CS continues to grow and mature, a key metric of project success they expect to see will be a growing awareness of data quality. They also conclude that CS will emerge as a general tool helping "to collect otherwise unobtainable high-quality data in support of policy and resource management, conservation monitoring, and basic science."

A study of Canadian lepidoptera datasets published in 2018 compared the use of a professionally curated dataset of butterfly specimen records with four years of data from a CS program, eButterfly.  The eButterfly dataset was used as it was determined to be of high quality because of the expert vetting process used on the site, and there existed a historic dataset covering the same geographic area consisting of specimen data, much of it institutional. The authors note that, in this case, CS data provides both novel and complementary information to the specimen data. Five new species were reported from the CS data, and geographic distribution information was improved for over 80% of species in the combined dataset when CS data was included.

Law

In March 2015, the state of Wyoming passed new laws (Senate Files 12 and 80) clarifying that trespassing laws applied even if the trespasser's intention was to gather data to further a U.S. government science program. This hampered some CS researchers who were collecting data while on other people's land.

Ethics

Various studies have been published that explore the ethics of CS, including issues such as intellectual property and project design.(e.g.) The Citizen Science Association (CSA), based at the Cornell Lab of Ornithology, and the European Citizen Science Association (ECSA), based in the Museum für Naturkunde in Berlin, have working groups on ethics and principles.

In September 2015, the European Citizen Science Association (ECSA) published its Ten Principles of Citizen Science, which have been developed by the "Sharing best practice and building capacity" working group of the ECSA, led by the Natural History Museum, London with input from many members of the association.
  • Citizen science projects actively involve citizens in scientific endeavour that generates new knowledge or understanding. Citizens may act as contributors, collaborators, or as project leader and have a meaningful role in the project.
  • Citizen science projects have a genuine science outcome. For example, answering a research question or informing conservation action, management decisions or environmental policy.
  • Both the professional scientists and the citizen scientists benefit from taking part. Benefits may include the publication of research outputs, learning opportunities, personal enjoyment, social benefits, satisfaction through contributing to scientific evidence e.g. to address local, national and international issues, and through that, the potential to influence policy.
  • Citizen scientists may, if they wish, participate in multiple stages of the scientific process. This may include developing the research question, designing the method, gathering and analysing data, and communicating the results.
  • Citizen scientists receive feedback from the project. For example, how their data are being used and what the research, policy or societal outcomes are.
  • Citizen science is considered a research approach like any other, with limitations and biases that should be considered and controlled for. However unlike traditional research approaches, citizen science provides opportunity for greater public engagement and democratisation of science.
  • Citizen science project data and meta-data are made publicly available and where possible, results are published in an open access format. Data sharing may occur during or after the project, unless there are security or privacy concerns that prevent this.
  • Citizen scientists are acknowledged in project results and publications.
  • Citizen science programmes are evaluated for their scientific output, data quality, participant experience and wider societal or policy impact.
  • The leaders of citizen science projects take into consideration legal and ethical issues surrounding copyright, intellectual property, data sharing agreements, confidentiality, attribution, and the environmental impact of any activities.
The medical ethics of internet crowdsourcing has been questioned by Graber & Graber in the Journal of Medical Ethics. In particular, they analyse the effect of games and the crowdsourcing project Foldit. They conclude: "games can have possible adverse effects, and that they manipulate the user into participation".

Economic worth

In the research paper "Can citizen science enhance public understanding of science?" by Bonney et al. 2016, statistics which analyse the economic worth of citizen science are used, drawn from two papers: i)Sauermann and Franzoni 2015, and ii)Theobald et al. 2015. In "Crowd science user contribution patterns and their implications" by Sauermann and Franzoni (2015), seven projects from the Zooniverse web portal are used to estimate the monetary value of the CS that had taken place. The 7 projects are: Solar Stormwatch, Galaxy Zoo Supernovae, Galaxy Zoo Hubble, Moon Zoo, Old Weather, The Milky Way Project and Planet Hunters. Using data from 180 days in 2010, they find a total of 100,386 users participated, contributing 129,540 hours of unpaid work. Estimating at a rate of $12 an hour (an undergraduate research assistant's basic wage), the total contributions amount to $1,554,474, an average of $222,068 per project. It should be noted that the range over the 7 projects was from $22,717 to $654,130.

In "Global change and local solutions: Tapping the unrealized potential of citizen science for biodiversity research" by Theobald et al. 2015, the authors surveyed 388 unique biodiversity-based projects. Quoting: "We estimate that between 1.36 million and 2.28 million people volunteer annually in the 388 projects we surveyed, though variation is great" and that "the range of in-kind contribution of the volunteerism in our 388 citizen science projects as between $667 million to $2.5 billion annually."

Worldwide participation in citizen science continues to grow. A list of the top five citizen science communities compiled by Marc Kuchner and Kristen Erickson in July 2018 shows a total of 3.75 million participants, although there is likely substantial overlap between the communities.

Five top citizen science communities as of July 1, 2018.

Education

There have been studies published which examine the place of CS within education.(e.g.) Teaching aids can include books and activity or lesson plans.(e.g.). Some examples of studies are:
From the Second International Handbook of Science Education, a chapter entitled: "Citizen Science, Ecojustice, and Science Education: Rethinking an Education from Nowhere" by Mueller and Tippins (2011), acknowledges in the abstract that: "There is an emerging emphasis in science education on engaging youth in citizen science." The authors also ask: "whether citizen science goes further with respect to citizen development." The abstract ends by stating that the "chapter takes account of the ways educators will collaborate with members of the community to effectively guide decisions, which offers promise for sharing a responsibility for democratizing science with others."

From the journal Democracy and Education, an article entitled: "Lessons Learned from Citizen Science in the Classroom" by authors Gray, Nicosia and Jordan (GNJ) (2012) give a response to a study by Mueller, Tippins and Bryan (MTB) called "The Future of Citizen Science". GNJ begins by stating in the abstract that the study The Future Of Citizen Science: "provides an important theoretical perspective about the future of democratized science and K12 education." But GRB state: "However, the authors (MTB) fail to adequately address the existing barriers and constraints to moving community-based science into the classroom." They end the abstract by arguing: "that the resource constraints of scientists, teachers, and students likely pose problems to moving true democratized science into the classroom."

In 2014, a study was published called "Citizen Science and Lifelong Learning" by R. Edwards in the journal Studies in the Education of Adults. Edwards begins by writing in the abstract that CS projects have expanded over recent years and engaged CSs and professionals in diverse ways. He continues: "Yet there has been little educational exploration of such projects to date." He describes that "there has been limited exploration of the educational backgrounds of adult contributors to citizen science". Edwards explains that CS contributers are referred to as volunteers, citizens or as amateurs. He ends the abstract: "The article will explore the nature and significance of these different characterisations and also suggest possibilities for further research."

In the journal Microbiology and Biology Education a study was published by Shah and Martinez (2015) called "Current Approaches in Implementing Citizen Science in the Classroom". They begin by writing in the abstract that CS is a partnership between inexperienced amateurs and trained scientists. The authors continue: "With recent studies showing a weakening in scientific competency of American students, incorporating citizen science initiatives in the curriculum provides a means to address deficiencies". They argue that combining traditional and innovative methods can help provide a practical experience of science. The abstract ends: "Citizen science can be used to emphasize the recognition and use of systematic approaches to solve problems affecting the community."

In November 2017, authors Mitchell, Triska and Liberatore published a study in Public Library of Science titled "Benefits and Challenges of Incorporating Citizen Science into University Education". The authors begin by stating in the abstract that CSs contribute data with the expectation that it will be used. It reports that CS has been used for first year university students as a means to experience research. They continue: "Surveys of more than 1500 students showed that their environmental engagement increased significantly after participating in data collection and data analysis." However, only a third of students agreed that data collected by CSs was reliable. A positive outcome of this was that the students were more careful of their own research. The abstract ends: "If true for citizen scientists in general, enabling participants as well as scientists to analyse data could enhance data quality, and so address a key constraint of broad-scale citizen science programs."

History

"Citizen science" is a fairly new term but an old practice. Prior to the 20th century, science was often the pursuit of gentleman scientists, amateur or self-funded researchers such as Sir Isaac Newton, Benjamin Franklin, and Charles Darwin. By the mid-20th century, however, science was dominated by researchers employed by universities and government research laboratories. By the 1970s, this transformation was being called into question. Philosopher Paul Feyerabend called for a "democratization of science". Biochemist Erwin Chargaff advocated a return to science by nature-loving amateurs in the tradition of Descartes, Newton, Leibniz, Buffon, and Darwin—science dominated by "amateurship instead of money-biased technical bureaucrats".

A study from 2016 indicates that the largest impact of citizen science is in research on biology, conservation and ecology, and is utilized mainly as a methodology of collecting and classifying data.

Amateur astronomy

Amateur astronomers can build their own equipment and can hold star parties and gatherings, such as Stellafane.

Astronomy has long been a field where amateurs have contributed throughout time, all the way up to the present day.

Collectively, amateur astronomers observe a variety of celestial objects and phenomena sometimes with equipment that they build themselves. Common targets of amateur astronomers include the Moon, planets, stars, comets, meteor showers, and a variety of deep-sky objects such as star clusters, galaxies, and nebulae. Observations of comets and stars are also used to measure the local level of artificial skyglow. One branch of amateur astronomy, amateur astrophotography, involves the taking of photos of the night sky. Many amateurs like to specialize in the observation of particular objects, types of objects, or types of events that interest them.

The American Association of Variable Star Observers has gathered data on variable stars for educational and professional analysis since 1911 and promotes participation beyond its membership on its Citizen Sky website.

Butterfly counts

Butterfly counts have a long tradition of involving individuals in the study of butterflies' range and their relative abundance. Two long-running programs are the UK Butterfly Monitoring Scheme (started in 1976) and the North American Butterfly Association's Butterfly Count Program (started in 1975). There are various protocols for monitoring butterflies and different organizations support one or more of transects, counts and/or opportunistic sightings. eButterfly is an example of a program designed to capture any of the three types of counts for observers in North America. Species-specific programs also exist, with monarchs the prominent example. Two examples of this involve the counting of monarch butterflies during the fall migration to overwintering sites in Mexico: (1) Monarch Watch is a continent-wide project, while (2) the Cape May Monarch Monitoring Project is an example of a local project. The Austrian project Viel-Falter investigated if and how trained and supervised pupils are able to systematically collect data about the occurrence of diurnal butterflies, and how this data could contribute to a permanent butterfly monitoring system. Despite substantial identification uncertainties for some species or species groups, the data collected by pupils was successfully used to predict the general habitat quality for butterflies.

Ornithology

Citizen science projects have become increasingly focused on providing benefits to scientific research. The North American Bird Phenology Program (historically called the Bird Migration and Distribution records) may have been the earliest collective effort of citizens collecting ornithological information in the U.S. The program, dating back to 1883, was started by Wells Woodbridge Cooke. Cooke established a network of observers around North America to collect bird migration records. The Audubon Society's Christmas Bird Count, which began in 1900, is another example of a long-standing tradition of citizen science which has persisted to the present day. Citizen scientists help gather data that will be analyzed by professional researchers, and can be used to produce bird population and biodiversity indicators.

Raptor migration research relies on the data collected by the hawkwatching community. This mostly volunteer group counts migrating accipiters, buteos, falcons, harriers, kites, eagles, osprey, vultures and other raptors at hawk sites throughout North America during the spring and fall seasons. The daily data is uploaded to hawkcount.org where it can be viewed by professional scientists and the public.

Such indices can be useful tools to inform management, resource allocation, policy and planning. For example, European breeding bird survey data provide input for the Farmland Bird Index, adopted by the European Union as a structural indicator of sustainable development. This provides a cost-effective alternative to government monitoring.

Similarly, data collected by citizen scientists as part of BirdLife Australia's has been analysed to produce the first-ever Australian Terrestrial Bird Indices.

Citizen oceanography

The concept of citizen science has been extended to the ocean environment for characterizing ocean dynamics and tracking marine debris. For example, the mobile app Marine Debris Tracker is a joint partnership of National Oceanic and Atmospheric Administration and the University of Georgia. Long term sampling efforts such as the continuous plankton recorder has been fitted on ships of opportunity since 1931. Plankton collection by sailors and subsequent genetic analysis was pioneered in 2013 by Indigo V Expeditions as a way to better understand marine microbial structure and function.

Citizen study of coral reefs

Underwater photography has become more and more popular since the early 2000s, resulting on millions of pictures posted every year on various websites and social media. This mass of documentation is endowed with an enormous scientific potential, as millions of tourists possess a much superior coverage power than professional scientists, who can not allow themselves to spend so much time in the field. As a consequence, several participative sciences programs have been developped, supported by geo-localization and identification web sites (such as iNaturalist.org). Another example, the Monitoring through many eyes project collates thousands of underwater images of the Great Barrier Reef and provides an interface for elicitation of reef health indicators.

Additionally, the National Oceanic and Atmospheric Administration offers opportunities for volunteer participation. By taking measurements in The United States' National Marine Sanctuaries, citizens are able to contribute data to a variety of marine biology projects. By enabling these citizens, NOAA benefited from 137,000 hours of research during 2016.

There also exist protocols for auto-organization and self-teaching aimed at biodiversity-interested snorkelers, in order for them to turn their observations into sound scientific data, available for research. This kind of approach has been successfully used in Réunion island, allowing for tens of new records and even new species.

Art history

Citizen science has a long tradition in Natural science. But nowadays, citizen science projects can also be found in various fields of science like Art history. For example, the Zooniverse project AnnoTate is a transcription tool developed to enable volunteers to read and transcribe the personal papers of British-born and émigré artists. The papers are drawn from the Tate Archive. Another example of citizen science in art history is ARTigo.[98] ARTigo collects semantic data on artworks from the footprints left by players of games featuring artwork images. From these footprints, ARTigo automatically builds a semantic search engine for artworks.

Modern technology

Newer technologies have increased the options for citizen science. Citizen scientists can build and operate their own instruments to gather data for their own experiments or as part of a larger project. Examples include amateur radio, amateur astronomy, Six Sigma Projects, and Maker activities. Most recently scientist Joshua Pearce has advocated for the creation of open-source hardware based scientific equipment that both citizen scientists and professional scientists, which can be replicated by digital manufacturing techniques such as 3D printing. Multiple studies have shown this approach radically reduces scientific equipment costs. Examples of this approach include water testing, nitrate and other environmental testing, basic biology and optics. Groups such as Public Labs, which is a community where citizen scientists can learn how to investigate environmental concerns using inexpensive DIY techniques, embody this approach.

Citizen Science Center exhibit in the Nature Research Center wing of the North Carolina Museum of Natural Sciences

Video technology has enabled expanded citizen science.[citation needed] The Citizen Science Center in the Nature Research Center wing of the North Carolina Museum of Natural Sciences has exhibits on how to get involved in scientific research and become a citizen scientist. For example, visitors can observe birdfeeders at the Prairie Ridge Ecostation satellite facility via live video feed and record which species they see.

Since 2005, the Genographic Project has used the latest genetic technology to expand our knowledge of the human story, and its pioneering use of DNA testing to engage and involve the public in the research effort has helped to create a new breed of "citizen scientist". Geno 2.0 expands the scope for citizen science, harnessing the power of the crowd to discover new details of human population history. This includes supporting, organization and dissemination of personal DNA (genetic) testing. Like Amateur astronomy, citizen scientists encouraged by volunteer organizations like the International Society of Genetic Genealogy have provided valuable information and research to the professional scientific community.

With unmanned aerial vehicles, further citizen science is enabled. One example is the ESA's AstroDrone smartphone app for gathering robotic data with the Parrot AR.Drone.

Citizens in Space (CIS), a project of the United States Rocket Academy, seeks to combine citizen science with citizen space exploration. CIS is training citizen astronauts to fly as payload operators on suborbital reusable spacecraft that are now in development. CIS will also be developing, and encouraging others to develop, citizen-science payloads to fly on suborbital vehicles. CIS has already acquired a contract for 10 flights on the Lynx suborbital vehicle, being developed by XCOR Aerospace, and plans to acquire additional flights on XCOR Lynx and other suborbital vehicles in the future.

CIS believes that "The development of low-cost reusable suborbital spacecraft will be the next great enabler, allowing citizens to participate in space exploration and space science."

Internet

How your gameplay helps ScienceAtHome build a quantum computer

The Internet has been a boon to citizen science, particularly through gamification. One of the first Internet-based citizen science experiments was NASA's Clickworkers, which enabled the general public to assist in the classification of images, greatly reducing the time to analyze large data sets. Another was the Citizen Science Toolbox, launched in 2003, of the Australian Coastal Collaborative Research Centre. Mozak is a game in which players create 3D reconstructions from images of actual human and mouse neurons, helping to advance understanding of the brain. One of the largest citizen science games is Eyewire, a brain-mapping puzzle game developed at the Massachusetts Institute of Technology that now has over 200,000 players. Another example is Quantum Moves, a game developed by the Center for Driven Community Research at Aarhus University, which uses online community efforts to solve quantum physics problems. The solutions found by players can then be used in the lab to feed computational algorithms used in building a scalable quantum computer.
More generally, Amazon's Mechanical Turk is frequently used in the creation, collection, and processing of data by paid citizens. There is controversy as to whether or not the data collected through such services is reliable, as it is subject to participants' desire for compensation. However, use of Mechanical Turk tends to quickly produce more diverse participant backgrounds, as well as comparably accurate data when compared to traditional collection methods.

The internet has also enabled citizen scientists to gather data to be analyzed by professional researchers. Citizen science networks are often involved in the observation of cyclic events of nature (phenology), such as effects of global warming on plant and animal life in different geographic areas, and in monitoring programs for natural-resource management. On BugGuide.Net, an online community of naturalists who share observations of arthropod, amateurs and professional researchers contribute to the analysis. By October 2014, BugGuide has over 808,718 images submitted by more than 27,846 contributors.

An NASA/JPL image from the Zooniverse's The Milky Way Project showing a hierarchical bubble structure

The Zooniverse is home to the internet's largest, most popular and most successful citizen science projects.] The Zooniverse and the suite of projects it contains is produced, maintained and developed by the Citizen Science Alliance (CSA). The member institutions of the CSA work with many academic and other partners around the world to produce projects that use the efforts and ability of volunteers to help scientists and researchers deal with the flood of data that confronts them. On June 29, 2015, the Zooniverse released a new software version with a project-building tool allowing any registered user to create a project. Project owners may optionally complete an approval process to have their projects listed on the Zooniverse site and promoted to the Zooniverse community. A NASA/JPL picture to the right gives an example from one of Zooniverse's projects The Milky Way Project.

The website CosmoQuest has as its goal "To create a community of people bent on together advancing our understanding of the universe; a community of people who are participating in doing science, who can explain why what they do matters, and what questions they are helping to answer.

CrowdCrafting enables its participants to create and run projects where volunteers help with image classification, transcription, geocoding and more. The platform is powered by PyBossa software, a free and open-source framework for crowdsourcing.

Project Soothe is a citizen science research project based at the University of Edinburgh. The aim of this research is to create a bank of soothing images, submitted by members of the public, which can be used to help others through psychotherapy and research in the future. Since 2015, Project Soothe has received over 600 soothing photographs from people in 23 countries. Anyone aged 12 years or over are eligible to participate in this research in two ways: (1) By submitting soothing photos that they have taken with a description of why the images make them feel soothed (2) By rating the photos that have been submitted by people worldwide for their soothability. 

Smartphone bandwidth

The bandwidth and ubiquity afforded by smartphone technology has vastly expanded the opportunities for citizen science. Examples include iNaturalist, the San Francisco project, the WildLab, Project Noah, and Aurorasurus. Due to their ubiquity, for example, Twitter, Facebook, and smartphones have been useful for citizen scientists, having enabled them to discover and propagate a new type of aurora dubbed "STEVE" in 2016.

There are also smartphone apps for monitoring birds, marine wildlife and other organisms, and the "Loss of the Night".

An Android app Sapelli is a mobile data-collection and -sharing platform designed with a particular focus on non-literate and illiterate users with little or no prior ICT experience. A smartphone focussed platform for Citizen Science applications is SPOTTERON, which creates synergy effects for projects by sharing a common feature set.

"The Crowd and the Cloud" is a four-part series broadcast during April 2017, which examines citizen science. It shows how smartphones, computers and mobile technology enable regular citizens to become part of a 21st-century way of doing science. The programs also demonstrate how CSs help professional scientists to advance knowledge, which helps speed up new discoveries and innovations. The Crowd & The Cloud is based upon work supported by the National Science Foundation.

Seismology

Since 1975, in order to improve earthquake detection and collect useful information, the European-Mediterranean Seismological Centre monitors the visits of earthquake eyewitnesses to its website and relies on Facebook and Twitter.

Hydrology

Citizen science has been used to provide valuable data in hydrology (catchment science), notably flood risk, water quality and water resource management. A growth in internet use and smartphone ownership has allowed users to collect and share real-time flood-risk information using, for example, social media and web-based forms. Although traditional data collection methods are well-established, citizen science is being used to fill the data gaps on a local level, and is therefore meaningful to individual communities. It has been demonstrated that citizen science is particularly advantageous during a flash flood because the public are more likely to witness these rarer hydrological events than scientists.

Africa and South America

There are many CS projects in Africa and South America. Some examples in Africa are:
  • In South Africa (SA), CS projects include: the Stream Assessment Scoring System (miniSASS) which "encourages enhanced catchment management for water security in a climate stressed society."
Snapshot Serengeti classifies animals at the Serengeti National Park in Tanzania
  • Also in SA, "Members of the public, or 'citizen scientists' are helping researchers from the University of Pretoria to identify Phytophthora species present in the fynbos."
  • In June 2016, citizen science experts from across East Africa gathered in Nairobi, Kenya for a symposium organised by the Tropical Biology Association (TBA) in partnership with the Centre for Ecology & Hydrology (CEH). The aim was "to harness the growing interest and expertise in East Africa to stimulate new ideas and collaborations in citizen science." Rosie Trevelyan of the TBA said: "We need to enhance our knowledge about the status of Africa's species and the threats facing them. And scientists can't do it all on their own. At the same time, citizen science is an extremely effective way of connecting people more closely to nature and enrolling more people in conservation action".
  • The website Zooniverse hosts several African CS projects, including: Snapshot Serengeti, Wildcam Gorongosa and Jungle Rhythms.
  • Nigeria has the Ibadan Bird Club whose to aim is to "exchange ideas and share knowledge about birds, and get actively involved in the conservation of birds and biodiversity."
  • In Namibia, Giraffe Spotter.org is "project that will provide people with an online citizen science platform for giraffes".
  • Within the Republic of the Congo, the territories of an indigenous people have been mapped so that "the Mbendjele tribe can protect treasured trees from being cut down by logging companies". An Android open-source app called Sapelli was used by the Mbendjele which helped them map "their tribal lands and highlighted trees that were important to them, usually for medicinal reasons or religious significance. Congolaise Industrielle des Bois then verified the trees that the tribe documented as valuable and removed them from its cutting schedule. The tribe also documented illegal logging and poaching activities."
  • In West Africa, the irradication of the recent outbreak of Ebola virus disease was partly helped by CS. "Communities learnt how to assess the risks posed by the disease independently of prior cultural assumptions, and local empiricism allowed cultural rules to be reviewed, suspended or changed as epidemiological facts emerged." "Citizen science is alive and well in all three Ebola-affected countries. And if only a fraction of the international aid directed at rebuilding health systems were to be redirected towards support for citizen science, that might be a fitting memorial to those who died in the epidemic."
Asháninka children in school
  • In 2015 the Asháninka people from Apiwtxa, which crosses the border between Brazil and Peru, began using the Android app Sapelli to monitor their land. The Ashaninka have "faced historical pressures of disease, exploitation and displacement, and today still face the illegal invasion of their lands by loggers and hunters. This monitoring project shows how the Apiwtxa Ashaninka from the Kampa do Rio Amônia Indigenous Territory, Brazil, are beginning to use smartphones and technological tools to monitor these illegal activities more effectively."
  • In Argentina, two smartphone Android applications are available for CS. i) AppEAR has been developed at the Institute of Limnology and was launched in May 2016. Joaquín Coachman is a researcher who developed an "application that appeals to the collaboration of users of mobile devices in collecting data that allow the study of aquatic ecosystems" (translation). Coachman stated: "Not much of citizen science in Argentina, just a few more oriented to astronomy specific cases. As ours is the first. And I have volunteers from different parts of the country that are interested in joining together to centralize data. That's great because these types of things require many people participate actively and voluntarily" (translation). ii) eBird was launched in 2013, and has so far identified 965 species of birds. eBird in Argentina is "developed and managed by the Cornell Lab of Ornithology at Cornell University, one of the most important ornithological institutions in the world, and locally presented recently with the support of the Ministry of Science, Technology and Productive Innovation of the Nation (MINCyT)" (translation).
  • Projects in Brazil include: i) Platform and mobile app 'Missions' has been developed by IBM in their São Paulo research lab with Brazil's Ministry for Environment and Innovation (BMEI). Sergio Borger, an IBM team lead in São Paulo, devised the crowdsourced approach when BMEI approached the company in 2010. They were looking for a way to create a central repository for the rainforest data. Users can upload photos of a plant species and its components, enter its characteristics (such as color and size), compare it against a catalog photo and classify it. The classification results are juried by crowdsourced ratings. ii) Exoss Citizen Science is a member of Astronomers Without Borders and seeks to explore the southern sky for new meteors and radiants. Users can report meteor fireballs through uploading pictures on to a webpage or by linking to YouTube.

    A jaguar in Pantanal; an example of Brazilian biodiversity.
  • iii) The Information System on Brazilian Biodiversity (SiBBr) was launched in 2014 "aiming to encourage and facilitate the publication, integration, access and use of information about the biodiversity of the country." Their initial goal "was to gather 2.5 million occurrence records of species from biological collections in Brazil and abroad up to the end of 2016. It is now expected that SiBBr reach 9 million of records in 2016." Andrea Portela said: "In 2016, we will begin with the citizen science. They are tools that enable anyone, without any technical knowledge, to participate. With this we will achieve greater engagement with society. People will be able to have more interaction with the platform, contribute and comment on what Brazil has. iv) The Brazilian Marine Megafauna Project (Iniciativa Pro Mar) is working with the European CSA towards its main goal, which is the "sensibilization of society for marine life issues" and concerns about pollution and the over-exploitation of natural resources.[161] Having started as a project monitoring manta ray, it now extends to whale shark and educating schools and divers within the Santos area. Its social media activities include a live streaming of a CS course to help divers identify marine megafauna. v) A smartphone app called Plantix has been developed by the Leibniz Centre for Agricultural Landscape Research (ZALF) which helps Brazilian farmers discover crop diseases quicker and helps fight them more efficiently. Brazil is a very large agricultural exporter, but between 10-30% of crops fail because of disease. "The database currently includes 175 frequently occurring crop diseases and pests as well as 40,000 photos. The identification algorithm of the app improves with every image which records a success rate of over 90 per cent as of approximately 500 photos per crop disease." vi) In an Atlantic Ocean forest region in Brazil, an effort to map the genetic riches of soil is under way. The Drugs From Dirt initiative, based at the Rockefeller University, seeks to turn up bacteria that yield new types of antibiotics- the Brazilian region being particularly rich in potentially useful bacterial genes. Approximately a quarter of the 185 soil samples have been taken by Citizen Scientists without which the project could not run.
  • In Chile CS projects include (some websites in Spanish): i) Testing new cancer therapies with scientists from the Science Foundation for Life. ii) Monitoring the population of the Chilean bumblebee. iii) Monitoring the invasive ladybird Chinita arlequín. iv) Collecting rain water data. (v) Monitoring various pollinating fly populations. (vi) Providing information and field data on the abundance and distribution of various species of rockfish.
  • Projects in Colombia include (some websites in Spanish): i) The Communications Project of the Humboldt Institute along with the Organization for Education and Environmental Protection initiated projects in the Bogotá wetlands of Cordoba and El Burro, which have a lot of biodiversity. ii) In the Model Forest of Risaralda, the Colombia 'proyecto de Ciencia Abierta y Colaborativa' promotes citizen participation in research related to the local environment is adapting to climate change. The first meeting took place in the Flora and Fauna Sanctuary Otún Quimbaya. iii) The Citizen Network Environmental Monitoring (CLUSTER), based in the city of Bucaramanga, seeks to engage younger students in data science, who are trained in building weather stations with open repositories based on free software and open hardware data. iv) The Symposium on Biodiversity has adapted the CS tool iNaturalist for use in Colombia. v) The Sinchi Amazonic Institute of Scientific Research seeks to encourage the development and diffusion of knowledge, values and technologies on the management of natural resources for ethnic groups in the Amazon. This research should further the use of participatory action research schemes and promoting participation communities.
  • Since 2010, the Pacific Biodiversity Institute (PBI) seeks "volunteers to help identify, describe and protect wildland complexes and roadless areas in South America". The PBI "are engaged in an ambitious project with our Latin American conservation partners to map all the wildlands in South America, to evaluate their contribution to global biodiversity and to share and disseminate this information."

Conferences

The first Conference on Public Participation in Scientific Research was held in Portland, Oregon in August 2012. Citizen science is now often a theme at large conferences, such as the annual meeting of the American Geophysical Union.

In 2010, 2012 and 2014 there were three Citizen Cybersience summits, organised by the Citizen Cyberscience Centre in Geneva. The 2014 summit was hosted in London and attracted over 300 participants.

In January 2015, the ETH Zürich and University of Zürich hosted an international meeting on the "Challenges and Opportunities in Citizen Science".

The first citizen science conference hosted by the Citizen Science Association was in San Jose, California, in February 2015 in partnership with the AAAS conference. The Citizen Science Association conference, CitSci 2017, was held in Saint Paul, Minnesota, United States, between May 17 and 20, 2017. The conference had more than 600 attendees. The next CitSci is in March 2019 in Raleigh, USA.

The platform "Österreich forscht" hosts the annual Austrian citizen science conference since 2015.

National and regional portals

Nation or region Portal Notes
Australia Australian Citizen Science Association
Australia Australian Citizen Science Project Finder
Austria Österreich Forscht
Canada Citizen science portal
Denmark Citizen Science Portalen
France Open
Germany Bürger schaffen Wissen
Global Scistarter
Global Zooniverse: People-powered research
Ireland Environmental Protection Agency
Netherlands and Flanders EOS Wetenschap
Scotland Citizen Science with TCV.
Spain Observatorio De La Ciencia Ciudadana
Sweden Arenas for co-operation through citizen science
Switzerland Schweiz Forscht
United Kingdom UK Environment Observation Framework
United States USA Government Official Website

Thursday, November 22, 2018

Space stations and habitats in fiction

From Wikipedia, the free encyclopedia

The concepts of space stations and habitats are common in modern culture. While space stations have become reality, there are as yet no true space habitats. Writers, filmmakers, and other artists have produced vivid renditions of the idea of a space station or habitat, and these iterations can be categorized by some of the basic scientific concepts from which they are derived.

Space stations

Space stations in science fiction can employ both existing and speculative technologies. One of the earliest images was the rotating wheel space station (such as the Stanford torus), the inertia and centripetal force of which would theoretically simulate the effects of gravity. Stations using artificial gravity are still purely speculative.

Space stations allow characters a relatively constrained setting, serving either as plot site or as safe refuge to which one can retreat. Since they are literary devices, there is no scientific imperative for their evolution to have followed the logical succession of scientific progress as it exists in reality; they may contain any artifact or device demanded by the plot, and can be provided by design or mere happenstance.

Space stations are often used as headquarters for organizations, which are thus linked to, but independent of, their place of formation, as research facilities in which experiments too dangerous for planetary settings can be carried out, and as the relics of lost civilizations, left behind when other things are removed.

Space stations rotating for pseudogravity

  • The film (and novel) 2001: A Space Odyssey is set in part on Space Station V, built as an 1,836-foot (560 m) partially completed double ring, revolving to produce one-sixth gravity. This station model is one of the most familiar designs from science fiction films.
  • Various stations in the 1996 Japanese anime Cowboy Bebop used torus space stations, although a number of the space colonies ignore physics and gravity laws behaving as Earth would. The ship Bebop itself also had an artificial gravity segment that slowly rotated as a cylinder inside of the fuselage, separate from the flight deck and hangar.
  • The 2003 Japanese anime Planetes has one of its main sets in the ISPV-7 (Seven), the 7th orbital station around the Earth while the 9th is under construction by the year 2075. It depicts accurately the zero-gravity zone around the axis, the microgravity service ring and the 1-g gravity external ring. The elevators have g-force indicators and harnesses for the passengers. Handles and grips are ubiquitous out of the 1-g area. The space station ISPV-7 serves as the base for the recovery ship DS-12 "Toybox".
  • Space Station One is the home of the Space Family Robinson. It is mobile, capable of planetary descent, and large enough for the family, with hydroponic gardens and two small shuttle crafts ("Spacemobiles"). Their ship functions as a habitat while attempting to return to earth.
  • Venus Equilateral Relay Station, from the 1940s Venus Equilateral series by George O. Smith, is a communications hub set in Venus' L4 point.
  • Earth II was a 1971 pilot (released theatrically outside North America), for a television series about a rotating colony established in orbit around the Earth.
  • The 1979 James Bond film Moonraker features a space station used as a base to launch attacks on Earth.
  • The television series Babylon 5 is set on a space station of that name in the years 2258–2262.
  • One book of the Outlanders series is set on a station called Parallax Red, supposedly launched by the United States, located at one of the Lagrangian points.
  • In the Command & Conquer series, the GDI faction has most of their command staff on a space station named Philadelphia.
  • Mystery in Space and Strange Adventures, the two most popular science fiction comic books of the 1950s, often depicted wheel-shaped space stations on their covers and in their stories.
  • In the Sonic the Hedgehog series, the Space Colony ARK is a near-Earth colonization ship, on which a secret research program has given birth to the Ultimate Life-form, Shadow the Hedgehog.

Space stations using artificial gravity

  • The Star Trek franchise features several space station designs that all use artificial gravity. UFP Deep Space Station K7, Earth Station McKinley, and the Federation Spacedocks are examples, as is Jupiter Station, a research and development facility, and Deep Space Nine (aka DS9 or Terok Nor), the primary setting of Star Trek: Deep Space Nine.
  • The Death Star and the Death Star II from the Star Wars series are mobile space stations designed to destroy entire planets. They are capable of travelling interstellar distances, and are the size of moons or small planets. Artificial gravity, not rotation, is used to counter weightlessness.
  • In the space role-playing game EVE Online, most actions besides mining, travelling and combat take place in space stations orbiting moons and/or planets.
  • Many episodes of Doctor Who take place on space stations, including StationFive / the Gamestation and Platform One, built five billion years in the future to witness Earth's destruction in the episode "The End of the World".
  • The Disney television film Zenon: Girl of the 21st Century and its two sequels Zenon: The Zequel and Zenon: Z3 are set on a space station in the 2050s.
  • In Stargate Atlantis, a "Stargate bridge" links the Milky Way and Pegasus galaxies. Because of differences between the Milky Way and Pegasus Stargates, there is a space station linking the two "gates" midway between the galaxies.
  • Space Station 76 is a 2014 dark comedy film that deconstructs seemingly idyllic relationships, set against the backdrop of Omega 76, a 1970s retrofuturistic space station.
  • The space station Perma One is a primary setting of the science fiction sitcom Quark.
  • In The Outer Limits episode "Specimen: Unknown", the research space station Adonis is in orbit of Earth.

Other space stations

Habitats

Spherical habitats

Dyson spheres

Bernal spheres

The Bernal sphere is a rotating sphere housing tens of thousands of people.

Toroidal or annular habitats

Illustration of a ring, with no apparent hub

Tori

A rotating torus sometimes quite large in diameter makes possible extensive artificial worlds.
  • One of the earliest portrayals of a torus station is shown in 1957 Soviet docufiction film Road to the Stars by Pavel Klushantsev.
  • Earth-orbiting Space Station V invented by Arthur C. Clarke and Stanley Kubrick and depicted in Kubrick's 1968 movie 2001: A Space Odyssey.
  • The short film L5: First City in Space is set on a Stanford torus at L5.
  • The novels of the Gaea Trilogy by John Varley are set on an unusual organic satellite of Saturn that is shaped as a Stanford Torus.
  • In the anime series Mobile Suit Gundam Wing, most of the many space colonies in Earth orbit are based on the Stanford torus. The anime series Mobile Suit Gundam 00 also depicts Stanford tori-type space stations. The Laplace Residence in Gundam Unicorn is also an example of a Stanford torus.
  • In the anime series Planetes, the main action also takes place in a Stanford torus-type space station around Earth.
  • Hideo Kojima's PlayStation 2 video game Zone of the Enders is set aboard a Stanford torus-type space station orbiting Jupiter called Antillia Colony.
  • The video game Startopia is set aboard a series of Stanford tori.
  • The video game Mass Effect features the Citadel, resembling a small Stanford torus with multiple arms attached. Arcturus Station, the Alliance capital, is also a Stanford torus, although it is never seen in-game.
  • Saturnalia and A Lion on Tharthee by Grant Callin features SpaceHome, a group of toroid space stations connected in a pinwheel fashion.
  • James P. Hogan wrote several novels that included a Stanford torus, including The Two Faces of Tomorrow, Endgame Enigma, and Voyage From Yesteryear.
  • FreeMarket Station, in the FreeMarket RPG, is a large Stanford Torus in stationary position near Saturn and home to over 85,000 transhuman individuals. Similar but smaller structures in this setting include Liberty (Earth L5) and Garuda (Mars).
  • The titular space station in Elysium, the 2013 science fiction film written and directed by Neill Blomkamp, strongly resembles a Stanford torus. However, it has an open atmosphere which make it more akin to a Bishop Ring. The lack of enclosure allowed the immigrant shuttles to land on Elysium.
  • The X game series has the planet encompassing Earth Torus which serves as a high orbital space dock for Terrans.
  • The French animated series Once upon a time... Space also featured a planet encompassiong Earth Torus, serving as space port as well as power supply station for the entire Earth.
  • In the 2004 Battlestar Galactica TV series the Zephyr, is a ship with a Stanford torus centered around a long cylindrical center.
  • In C. J. Cherryh's Alliance-Union universe most stations are described as rotating tori. The inside cover art for Downbelow Station shows the internal divisions of Pell station, a torus.

Bishop rings

The Bishop ring design is a ring 1,000 kilometres (620 mi) in radius and 500 kilometres (310 mi) thick, capable of supporting populations into the tens of billions. It requires mastery of carbon nanotubes.
  • Bishop Rings are a common type of habitat in the universe of the Orion's Arm world-building project, where the width of individual rings can vary from as little as 100 kilometres (62 mi) to as much as 500 kilometres (310 mi).

Other rings

Cylindrical habitats

NASA artist Rick Guidice's depiction of a pair of O'Neill cylinders

O'Neill cylinders

O'Neill's Island Three design, commonly called an O'Neill cylinder, consists of a pair of counter-rotating cylinders, each 3.2 kilometres (2.0 mi) in radius and 32 kilometres (20 mi) long, housing a population of up to 10 million.
  • In the SF-artwork book Mechanismo: An Illustrated Manual of Science Fiction Hardware (1978), edited by Harry Harrison, an illustration of Island Three is shown with technical notes.
  • Jerry Pournelle and John F. Carr edited an anthology of SF stories set in O'Neill cylinders or other types of space colonies, published in 1979 as The Endless Frontier volumes 1 and 2.
  • In the various Gundam anime series, O'Neill cylinders are common – especially in the Universal Century, where nine billion human beings live in these colonies. The Gundam series space colony design is usually portrayed with a rotational speed much faster than the original O'Neill design. This is in part for visual effect. All Gundam series involve space, and most are about conflicts between Earth and humans living in space colonies.
  • Vonda McIntyre's Starfarers series of novels is set on the Starfarer, a classic O'Neill double-cylinder space colony adapted to make faster-than-light interstellar jumps.
  • Alexis A. Gilliland's Rosinante novels feature a "dragon scale mosaic mirror", consisting of a large number of small mobile mirrors mounted on a cone around each habitat. These provide illumination, generate power, and defend the habitat. The array is much larger than the mirrors of O'Neill's design, but does not rotate with the habitat and so does not need as much structural strength.
  • An O'Neill cylinder similar to those found in the Gundam series provides the setting for a stage in the game Tekken 5. The arena consists of a glass platform mounted near the axis at one end of the habitat, with the rotating cylinder providing the backdrop. The stage is called "The Final Frontier", and the exterior can be seen in a cutscene. The view through the window would suggest that the facility is much nearer to the earth than the typical scenario. The same cylinder is also featured in Tekken 6, in a stage called "Fallen Colony", where the habitat has crashed down to Earth.
  • Hideo Kojima's adventure game Policenauts takes place in an O'Neill space colony located at the L5 Lagrange Point. These structures can also be seen in shooting games like Axelay (stage 2), Zone of the Enders, Super Earth Defense Force (stage 4), R-Type Final (stage 1), Thunder Force IV (Ruin stage), GG Aleste (stage 1), and Vanquish.
  • The Neyel, a race in the Star Trek novel The Sundered (by Andy Mangels and Michael A. Martin), were originally Earth humans who lived on Vanguard, an O'Neill-type habitat constructed inside an asteroid. (The name 'Neyel' is itself derived from O'Neill.)
  • The conclusion of Interstellar reveals that an O'Neill Cylinder has been built above Earth, with Earth's population migrating to it.
  • The Galactic Whirlpool, a Star Trek novel written by David Gerrold, focused on an O'Neill-style space station that had been retro-fitted as a generational interstellar ship.
  • Gene Wolfe's series The Book of the Long Sun take place on a generation ship, essentially a massive O'Neill cylinder, where the inhabitants have long forgotten that they are on a ship or journey. The series is followed by The Book of the Short Sun and is also linked to Wolfe's master work, The Book of the New Sun.
  • In the Italian comic book Nathan Never, Earth has spawned a number of space colonies in the form of O'Neill cylinders.
  • The anime series Sora wo Kakeru Shojo features an Island Three type space colony controlled by a narcissistic AI named Leopard as a major character.
  • David J. Williams' The Burning Skies features an O'Neill cylinder attacked by terrorists.
  • The miniseries L5 (2012) features an abandoned O'Neill cylinder.
  • In the Warhammer 40K books, it is mentioned that before Mankind mastered artificial gravity and Warp travel, "Ohnyl Cylinders" were used as habitats and generation ships.

McKendree cylinders

The McKendree cylinder design is a scaled-up O'Neill cylinder with a radius of 460 kilometres (290 mi) and a length of 4,600 kilometres (2,900 mi), capable of supporting populations in excess of 100 billion. This design requires mastery of carbon nanotubes.
  • McKendree cylinders are a type of habitat in the universe of the Orion's Arm world-building project, but scaled up to the theoretical limits of carbon nanotubes: 1,000 kilometres (620 mi) in radius and 10,000 kilometres (6,200 mi) long, containing 63 million square kilometres (24 million square miles) of living space—greater than the continent of Eurasia.

Other cylinders

  • Robert A. Heinlein, in his 1963 novelisation Orphans of the Sky (compiling two stories published in 1941), introduced revolving cylinders to emulate gravity. In this case there were many concentric levels, at which gravity stepwise-decreased towards the centre of the structure, resulting in zero gravity at the very centre.
  • In the Rama series of books by Arthur C. Clarke, gigantic alien spacecraft similar to O'Neill cylinders are explored by astronauts. Perhaps due to its design for interstellar travel, Rama lacks the mirrors and windows of an O'Neill cylinder, but does have lights arranged in three strips along its length, paralleling the placement of the windows. Note that Rendezvous with Rama was published (1973) in the period between O'Neill running the classes in which his cylinder design was produced and his publication, therefore the designs are likely entirely independent.
  • The television series Babylon 5 concerned an O'Neill-style space station 8.0 kilometres (5 miles) long. While the single cylinder Babylon 5 did not feature a counter-rotating section, its predecessor Babylon 4 did. Like Rama, Babylon 5 lacks the mirrors and windows of an O'Neill cylinder, but does have a fixed central light source. Day and night are simulated as the landscape below revolves around the light source.
  • In Ken Macleod's Learning the World, the 'Sunliner' Slow interstellar travel vessel But the Sky, My Lady! the Sky!, is based around an O'Neil cylinder with a central artificial 'sunline' (a miniature star strung out like an oversized tubular fluorescent bulb) that is simply activated and deactivated on a 24‑hour cycle, rather than relying on windows. On either end is a 'cone' together containing a bridge, maintenance systems, spare reaction fuel and propulsion/power grid systems.
  • Peter F. Hamilton's The Night's Dawn trilogy makes several references to an O'Neill halo orbiting Earth. The books aren't specific, but imply that it is constituted of a multitude of asteroids orbiting Earth. Also the Edenist culture of the books are said to inhabit huge Habitats that are slight variation on the O'Neill cylinder, though they are a gigantic living being. These habitats have a central light tube running through the centre of the structure rather than the mirror panels proposed in the original design. His Commonwealth Saga books also describe the character Ozzie Isaacs' home, which is an O'Neill cylinder located within an asteroid.
  • Orson Scott Card's novel Ender's Game concerns mostly the events taking place on Battle School, a short O'Neill cylinder, which houses the all-important Battle Room in the center of its rotation, which keeps it at null gravity.
  • The Citadel space station in the video game Mass Effect resembles an O'Neill cylinder, although there are no windows and atmosphere is only kept to around seven metres. The "land" sections are made up mostly of large buildings reminiscent of a city. Its head section is a Stanford torus, housing the headquarters of political and strategic decision-making. A second station, "Jump Zero", is mentioned but not yet seen in the franchise, and is described as a Bernal Sphere.
  • The French writer Bernard Werber in his novel Le papillon des étoiles described a generation ship under the form of a long rotating cylinder with central lightning tube. This ship is described to be privately constructed.
  • The 2001 novel Chasm City by Alastair Reynolds features a spindle-shaped variant, with higher gravity at the center and low gravity at the points. This is mentioned to be cheaper to build than cylindrical colonies.

Lunar Orbital Platform-Gateway

From Wikipedia, the free encyclopedia

Lunar Orbital Platform-Gateway
Lunar Orbital Platform-Gateway.jpg
Artist's concept of Lunar Orbital Platform-Gateway orbiting the Moon. The Orion MPCV is docked on the left.
Station statistics
Crew4 (proposed)
Carrier rocketSpace Launch System
Commercial vehicle
Proton-M
Angara

The Lunar Orbital Platform-Gateway (LOP-G) is a proposal for a lunar-orbit space station intended to serve as an all-in-one solar-powered communications hub, science laboratory, short-term habitation module, and holding area for rovers and other robots.

The science disciplines to be studied on the Gateway are expected to include planetary science, astrophysics, Earth observations, heliophysics, fundamental space biology and human health and performance.

The Gateway is designed to be developed, serviced, and utilized in collaboration with commercial and international partners. It will also serve as the staging point for crewed and robotic lunar exploration and a staging point for NASA's proposed Deep Space Transport craft to perform a 300-400 day shakedown mission prior to NASA's first crewed Mars mission. Deep Space Transport is a concept of a reusable vehicle that uses electric and chemical propulsion and would be specifically designed for crewed missions to destinations such as Mars.

The development is led by the International Space Station partners: ESA, NASA, Roscosmos, JAXA and CSA for construction in the 2020s. The International Space Exploration Coordination Group (ISECG), which comprises 14 space agencies participating with NASA, have concluded that LOP-G will be critical in expanding human presence to the Moon, Mars and deeper into the solar system. Formerly known as the Deep Space Gateway, the station was renamed in NASA's proposal for the 2019 United States federal budget. The omnibus spending bill passed by Congress in March of 2018 provided NASA with $504 million for the development of LOP-G in fiscal year 2019.

Overview

LOP-G advances NASA's goals of sustaining human space exploration and serves as a platform to further cislunar operations, lunar surface access and missions to Mars.

Originally, NASA had intended to build the Gateway as part of the now cancelled Asteroid Redirect Mission. An informal joint statement on cooperation between NASA and Roscosmos was announced on 27 September 2017. Traveling to and from cislunar space (lunar orbit) will help gain the knowledge and experience necessary to venture beyond the Moon and into deep space. The LOP-G would be initially placed in a highly elliptical near-rectilinear halo orbit (NRHO) around the Moon which will bring the station within 1,500 km (930 mi) of the lunar surface at closest approach and as far away as 70,000 km (43,000 mi) on a six-day orbit. This orbit would allow lunar expeditions from the Gateway to reach a polar low lunar orbit using 730 m/s of delta-v in half a day and also allow less than 10 m/s of delta-v to be required per year in stationkeeping. The Gateway could conceivably also support in-situ resource utilization (ISRU) development and testing from lunar and asteroid resources. The Gateway would offer the opportunity for gradual buildup of capabilities for more complex missions over time. Various components of the Gateway are to be launched on a commercial launch vehicle and on the Space Launch System as Orion co-manifested payloads on the flights EM-3 through EM-8. According to Roscosmos, they may also use Proton-M and Angara-A5M heavy launchers to fly payloads or crew.

The Power and Propulsion Element (PPE) for the LOP-G will have a mass of 8-9 t and be capable of generating 50 kW of solar electric power for its ion thrusters system for maneuverability, which can be supported by chemical propulsion. NASA stated that the most likely ion engine to be used on the PPE is the 14 kW Hall thruster called Advanced Electric Propulsion System (AEPS) still being developed by Glenn Research Center, the Jet Propulsion Laboratory, and Aerojet Rocketdyne. Four identical AEPS engines would consume the 50 kW generated.

Patrick Troutman serves as the lead for strategic assessments for the Deep Space Transport and the Lunar Orbital Platform-Gateway.

Studies

On 1 November 2017, NASA commissioned 5 studies lasting four months into affordable ways to develop the Power and Propulsion Element (PPE), hopefully leveraging private companies' plans. These studies had a combined budget of $2.4 million. The companies performing the PPE studies are Boeing, Lockheed Martin, Orbital ATK, Sierra Nevada and Space Systems/Loral. These awards are in addition of the ongoing set of NextSTEP-2 awards made in 2016 to study development and make ground prototypes of habitat modules that could be used on the Lunar Orbital Platform-Gateway as well as other commercial applications, so the LOP-G is likely to incorporate components developed under NextSTEP as well.

On 7 November 2017, NASA asked the global science community to submit concepts for scientific studies that could take advantage of the Gateway's location in cislunar space. The Deep Space Gateway Concept Science Workshop was held in Denver, Colorado from February 27th to March 1st 2018. This three-day conference was a workshop where 196 presentations were given for possible scientific studies that could be advanced through the use of the Gateway.

An earlier NASA proposal for a cislunar station had been made public in 2012 and was dubbed the Deep Space Habitat. That proposal had led to funding in 2015 under the NextSTEP program to study the requirements of deep space habitats. In February 2018 it was announced that those NextSTEP studies and other ISS partner studies would help to guide the capabilities required of the Gateway's habitation modules.

NASA has also initiated a Revolutionary Aerospace Systems Concepts Academic Linkage (RASC-AL) competition for universities to develop concepts and capabilities for the Gateway. The competitors are asked to employ original engineering and analysis in one of the following areas:
  • Gateway Uncrewed Utilization & Operations
  • Gateway-Based Human Lunar Surface Access
  • Gateway Logistics as a Science Platform
  • Design of a Gateway-Based Cislunar Tug
Teams of undergraduate and graduate students were asked to submit a response by January 17, 2019 addressing one of these four themes. NASA will select 20 teams to continue developing proposed concepts. Fourteen of the teams will be invited to present their projects in person on June 2019 at the RASC-AL Forum in Cocoa Beach, Florida and will receive a $6,000 stipend to participate in the Forum.

Proposed components

The Gateway will serve as an all-in-one solar-powered communications hub, science laboratory, short-term habitation module, and holding area for rovers and other robots.

The early concept for the LOP-G is still evolving, and may include the following component modules:
  • The Power and Propulsion Element (PPE) will be used to generate electricity for the space station and its solar electric propulsion. It is targeting launch on a commercial vehicle in 2022.
  • The European System Providing Refuelling, Infrastructure and Telecommunications (ESPRIT) module will provide additional xenon and hydrazine capacity, additional communications equipment, and an airlock for science packages. It would have a mass of approximately 4 tons, and a length of 3.91 m.
  • The U.S. Utilization Module is a small pressurized space that would enable a crew ingress on the very first mission to the Gateway assembly sequence. It will initially store additional food and will be launched along with ESPRIT on EM-3.
  • The International Partner Habitat and the U.S. Habitat are the two habitation modules. These will be launched on EM-4 and EM-5 and together will provide a minimum of 125 m3 of habitable volume to the station.
  • The Gateway Logistics Modules will be used to refuel, resupply and provide logistics on board the space station. The first logistics module sent to LOP-G will also arrive with a robotic arm, which will be built by the Canadian Space Agency.
  • The Gateway Airlock Module will be used for performing extravehicular activities outside the space station and will be the berth for the Deep Space Transport.

Surface missions

  • HERACLES (Human-Enhanced Robotic Architecture and Capability for Lunar Exploration and Science) is a proposed ESA-JAXA-CSA robotic lander and sample-return mission utilising the station. It involves dispatching a 11,000 kg lunar lander from Earth aboard an Ariane 64 which would land on the Moon before an ascent module returns to the Gateway station. The ascent modules (labelled I on the diagram above) are reusable and would be paired at Gateway with a fresh lander module dispatched from Earth. The rovers would land on the first and fourth lander missions collecting samples and loading them on the ascent module then traversing the hundreds of kilometres between landing sites on the lunar surface to rendezvous and load the next lander. The ascent module would return each time to the Gateway where it would be captured by the Canadian robotic arm and samples transferred to an Orion craft for transport to Earth with returning astronauts while the 2nd and 3rd landings would each have 500 kg payload available for alternate uses. The aim of the project is the development by ESA of a reusable lunar ascent engine, four of which could be clustered to power a wholly reusable crewed or robotic lander in the future, alongside the development of Gateway telecommunication command and control technology. ESA envisages that HERACLES would be subject to ministerial approval in 2019, and could allow a sample-return on the fourth or fifth Orion flight in the 2026-2030 timeframe, generating an early scientific return for the station and robotic surveying of the conditions that will be encountered at future crewed landing sites several years in advance.

Proposed timeline

Year Vehicle assembly objective Mission name Launch vehicle Human/robotic elements
September 2022 Start of the Lunar Orbital Platform-Gateway assembly by launching the Power and Propulsion Element (PPE) TBD Commercial launch vehicle Uncrewed
2024 ESPRIT and the U.S. Utilization Module launch and are mated to PPE in a L2 Southern Near Rectilinear Halo Orbit (NRHO) EM-3 Space Launch System, Block 1B Crewed
No Earlier Than 2024 Delivery of International Partner Habitat EM-4 Space Launch System, Block 1B Crewed
No Earlier Than 2025 Delivery of U.S. Habitat EM-5 Space Launch System, Block 1B Crewed
No Earlier Than 2024 Delivery of the first logistics module and the robotic arm EM-6 Space Launch System, Block 1B Crewed
2026 Orion capsule (crew 4) delivers the Airlock Module to the Gateway EM-7 Space Launch System, Block 1B Crewed
2027 Deep Space Transport (DST) to the Lunar Gateway EM-8 Space Launch System, Block 1B Uncrewed
2027 DST checkout mission EM-9 Space Launch System, Block 1B Crewed
2028 DST Cargo logistics and refuelling EM-10 Space Launch System, Block 1B Uncrewed
2029 DST one year cruise test (shakedown cruise) in cislunar space EM-11 Space Launch System, Block 2 Crewed
2030 Cargo DST logistics and refuelling mission EM-12 Space Launch System, Block 2 Uncrewed
2033 DST cruise for injection into Mars orbit EM-13 Space Launch System, Block 2 Crewed

Criticisms

The Deep Space Gateway has received numerous criticisms from several space professionals for lacking a proper scientific goal. Former NASA Astronaut Terry Virts, who was a pilot of STS-130 aboard Space Shuttle Endeavour and Commander of the International Space Station on Expedition 43 wrote in an Op-ed on Ars Technica that the Deep Space Gateway would "shackle human exploration, not enable it". Terry stated that there is no concrete human spaceflight goal with the Deep Space Gateway and that he cannot envision a new technology that would be developed or validated by building another modular space station. Terry further criticized NASA for abandoning its safety dictum of separating the crew from the cargo which was put in place following the Space Shuttle Columbia accident in 2003.

Mars Society founder Robert Zubrin, who has been one of the staunchest advocates for a human mission to Mars, called the Deep Space Gateway "NASA's worst plan yet" in an article on the National Review. Robert went on to say "We do not need a lunar-orbiting station to go to the Moon. We do not need such a station to go to Mars. We do not need it to go to near-Earth asteroids. We do not need it to go anywhere. Nor can we accomplish anything in such a station that we cannot do in the Earth-orbiting International Space Station" and that "there is nothing at all in lunar orbit: nothing to use, nothing to explore, nothing to do". Robert also stated that "If the goal is to build a Moon base, it should be built on the surface of the Moon. That is where the science is, that is where the shielding material is, and that is where the resources to make propellant and other useful things are to be found."

Retired aerospace engineer Gerald Black stated that the "LOP-G is useless for supporting human return to the lunar surface and a lunar base." He added that it is not even planned to be used as a rocket fuel depot and that stopping at LOP-G on the way to or from the Moon would serve no useful purpose and it would actually waste rocket fuel.

Pei Zhaoyu, deputy director of the Lunar Exploration and Space Program Center of the China National Space Administration, concludes that, from a cost-benefit standpoint, the gateway would have "lost cost-effectiveness." Pei said the Chinese plan is to focus on a research station on the surface.

Entropy (classical thermodynamics)

From Wikipedia, the free encyclopedia https://en.wikipedia.org/wiki/Entropy_(classical_thermodynamics) ...