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Wednesday, April 6, 2022

Perspectives on capitalism by school of thought

Throughout modern history, a variety of perspectives on capitalism have evolved based on different schools of thought.

Overview

Adam Smith was one of the first influential writers on the topic with his book The Wealth of Nations, which is generally considered to be the start of classical economics which emerged in the 18th century. To the contrary, Karl Marx considered capitalism to be a historically specific mode of production and considered capitalism a phase of economic development that would pass and be replaced by pure communism. In conjunction with his criticism of capitalism was Marx's belief that exploited labor would be the driving force behind a social revolution to a socialist-style economy. For Marx, this cycle of the extraction of the surplus value by the owners of capital or the bourgeoisie becomes the basis of class struggle.

This argument is intertwined with Marx's version of the labor theory of value asserting that labor is the source of all value and thus of profit. Max Weber considered market exchange rather than production as the defining feature of capitalism. In contrast to their counterparts in prior modes of economic activity, capitalist enterprises was their rationalization of production, directed toward maximizing efficiency and productivity; a tendency leading to a sociological process of enveloping rationalization. According to Weber, workers in pre-capitalist economic institutions understood work in terms of a personal relationship between master and journeyman in a guild, or between lord and peasant in a manor.

Meanwhile institutional economics, once the main school of economic thought in the United States, holds that capitalism cannot be separated from the political and social system within which it is embedded. In the late 19th century, the German Historical School of economics diverged with the emerging Austrian School of economics, led at the time by Carl Menger. Later generations of followers of the Austrian School continued to be influential in Western economic thought through much of the 20th century. The Austrian economist Joseph Schumpeter, a forerunner of the Austrian School of economics, emphasized the creative destruction of capitalism—the fact that market economies undergo constant change.

The Austrian economists Ludwig von Mises and Friedrich Hayek were among the leading defenders of market economy against 20th century proponents of socialist planned economies. Among Mises's arguments were the economic calculation problem, which was first proposed by Mises in 1920 and later expounded by Hayek. The problem referred to is that of how to distribute resources rationally in an economy. The free market solution is the price mechanism, wherein people individually have the ability to decide how a good or service should be distributed based on their willingness to give money for it. Mises and Hayek argued that only market capitalism could manage a complex, modern economy.

Partially opposed to that view, the British economist John Maynard Keynes argued in his 1937 The General Theory of Employment, Interest, and Money that capitalism suffered a basic problem in its ability to recover from periods of slowdowns in investment. Keynes argued that a capitalist economy could remain in an indefinite equilibrium despite high unemployment. Keynes tried to provide solutions to many of Marx’s problems without completely abandoning the classical understanding of capitalism. His work attempted to show that regulation can be effective and that economic stabilizers can rein in the aggressive expansions and recessions that Marx disliked.

These changes sought to create more stability in the business cycle and reduce the abuses of laborers. Keynesian economists argue that Keynesian policies were one of the primary reasons capitalism was able to recover following the Great Depression.

Supply-side economics developed during the 1970s in response to Keynesian economic policy and in particular the failure of demand management to stabilize Western economies during the stagflation of the 1970s in the wake of the oil crisis in 1973. It drew on a range of non-Keynesian economic thought, particularly Austrian School thinking on entrepreneurship and new classical macroeconomics. The intellectual roots of supply-side economics have also been traced back to various early economic thinkers such as Ibn Khaldun, Jonathan Swift, David Hume, Adam Smith and Alexander Hamilton. Typical policy recommendations of supply-side economics are lower marginal tax rates and less regulation. Maximum benefits from taxation policy are achieved by optimizing the marginal tax rates to spur growth, although it is a common misunderstanding that supply side economics is concerned only with taxation policy when it is about removing barriers to production more generally.

Today, the majority academic research on capitalism in the English-speaking world draws on neoclassical economic thought. It favors extensive market coordination and relatively neutral patterns of governmental market regulation aimed at maintaining property rights; deregulated labor markets; corporate governance dominated by financial owners of firms; and financial systems depending chiefly on capital market-based financing rather than state financing.

Milton Friedman took many of the basic principles set forth by Adam Smith and the classical economists and gave them a new twist. One example of this is his article in the September 1970 issue of The New York Times, where he claims that the social responsibility of business is "to use its resources and engage in activities designed to increase its profits…(through) open and free competition without deception or fraud". This is similar to Smith’s argument that self-interest in turn benefits the whole of society.

Work like this helped lay the foundations for the coming marketization (or privatization) of state enterprises and the supply-side economics of Ronald Reagan and Margaret Thatcher. The Chicago School of economics is best known for its free market advocacy and monetarist ideas. According to Friedman and other monetarists, market economies are inherently stable if left to themselves and depressions result only from government intervention.

Classical political economy

The classical school of economic thought emerged in Britain in the late 18th century. The classical political economists Adam Smith, David Ricardo, Jean-Baptiste Say and John Stuart Mill published analyses of the production, distribution and exchange of goods in a market that have since formed the basis of study for most contemporary economists.

In France, Physiocrats like François Quesnay promoted free trade based on a conception that wealth originated from land. Quesnay's Tableau Économique (1759) described the economy analytically and laid the foundation of the Physiocrats' economic theory, followed by Anne Robert Jacques Turgot who opposed tariffs and customs duties and advocated free trade. Richard Cantillon defined long-run equilibrium as the balance of flows of income and argued that the supply and demand mechanism around land influenced short-term prices.

Smith's attack on mercantilism and his reasoning for "the system of natural liberty" in The Wealth of Nations (1776) are usually taken as the beginning of classical political economy. Smith devised a set of concepts that remain strongly associated with capitalism today, particularly his theory of the "invisible hand" of the market, through which the pursuit of individual self-interest unintentionally produces a collective good for society. It was necessary for Smith to be so forceful in his argument in favor of free markets because he had to overcome the popular mercantilist sentiment of the time period.

Among civilized and thriving nations, on the contrary, though a great number of people do no labor at all, many of whom consume the produce of ten times, frequently of a hundred times more labour than the greater part of those who work; yet the produce of the whole labour of the society is so great, that all are often abundantly supplied, and a workman, even of the lowest and poorest order, if he is frugal and industrious, may enjoy a greater share of the necessaries and conveniencies of life than it is possible for any savage to acquire. — Adam Smith, The Wealth of Nations

He criticized monopolies, tariffs, duties and other state enforced restrictions of his time and believed that the market is the most fair and efficient arbitrator of resources. This view was shared by David Ricardo, second most important of the classical political economists and one of the most influential economists of modern times.

In The Principles of Political Economy and Taxation (1817), Ricardo developed the law of comparative advantage, which explains why it is profitable for two parties to trade, even if one of the trading partners is more efficient in every type of economic production. This principle supports the economic case for free trade. Ricardo was a supporter of Say's law and held the view that full employment is the normal equilibrium for a competitive economy. He also argued that inflation is closely related to changes in quantity of money and credit and was a proponent of the law of diminishing returns, which states that each additional unit of input yields less and less additional output.

The values of classical political economy are strongly associated with the classical liberal doctrine of minimal government intervention in the economy, though it does not necessarily oppose the state's provision of a few basic public goods. Classical liberal thought has generally assumed a clear division between the economy and other realms of social activity, such as the state.

Marx and critique of political economy

Karl Marx considered capitalism to be a historically specific mode of production. Marx's critique of political economy encompasses the study and exposition of the mode of production and ideology of bourgeois society, that is, the fundamental "economic" and social categories present within what for Marx is the capitalist mode of production. In contrast to the classics of political economy, Marx was concerned with lifting the "ideological veil" of surface phenomena and exposing the norms, axioms, social practices, institutions and so on, that reproduced the social phenomenon of capital. The central works in Marx's critique of political economy are Grundrisse, A Contribution to the Critique of Political Economy and Das Kapital. Marx's companion Friedrich Engels also critiqued the economy in his Outlines of a Critique of Political Economy (1844), which helped lay down some foundation for what Marx was to take further, and Engels just like Marx also compared economists with theologians, e.g by referring to Adam Smith as the economic Luther.

Some foundational concepts in Marx critique of political economy are the following:

  • Labour and capital are historically specific forms of social relations, and labour isn't the source of all wealth.
  • Labour is the other side of the same coin as capital, labour presupposes capital, and capital presupposes labour.
  • Money is not in any way something trans-historical or "natural" (which goes for the other categories of the economy as well), and gains its value due to social relations rather than any inherent quality.
  • The individual doesn't exist in some form of vacuum but is rather enmeshed in social relations.

For Marx, the capitalist stage of development or "bourgeois society" represented the most advanced form of social organization to date, but he also thought that the working classes would come to power in a worldwide socialist or communist transformation of human society as the end of the series of first aristocratic, then capitalist and finally working class rule was reached.

Karl Marx in 1875

Following Adam Smith, Marx distinguished the use value of commodities from their exchange value in the market. According to Marx, capital is created with the purchase of commodities for the purpose of creating new commodities with an exchange value higher than the sum of the original purchases. For Marx, the use of labor power had itself become a commodity under capitalism because the exchange value of labor power—as reflected in the wage—is less than the value it produces for the capitalist.

He argues this difference in values constitutes surplus value, which the capitalists extract and accumulate. In his book Capital, Marx argues that the capitalist mode of production is distinguished by how the owners of capital extract this surplus from workers—all prior class societies had extracted surplus labor, but capitalism was new in doing so via the sale-value of produced commodities. He argues that a core requirement of a capitalist society is that a large portion of the population must not possess sources of self-sustenance that would allow them to be independent and must instead be compelled to survive to sell their labor to manage to survive.

The commodity is first of all, an external object, a thing which through its qualities satisfies human needs of whatever kind. The nature of these needs, whether they arise, for example, from the stomach, or the imagination, makes no difference. Nor does it matter here how the thing satisfies man's need, whether directly as a means of subsistence, i.e. an object of consumption, or indirectly as a means of production. — Karl Marx, Das Kapital

In conjunction with his criticism of capitalism was Marx's belief that exploited labor would be the driving force behind a revolution. For Marx, this cycle of the extraction of the surplus value by the owners of capital or the bourgeoisie becomes the basis of class struggle.

Nature builds no machines, no locomotives, railways, electric telegraphs, self-acting mules etc. These are products of human industry; natural material transformed into organs of the human will over nature, or of human participation in nature. They are organs of the human brain, created by the human hand; the power of knowledge, objectified. The development of fixed capital indicates to what degree general social knowledge has become a direct force of production, and to what degree, hence, the conditions of the process of social life itself have come under the control of the general intellect and been transformed in accordance with it. — Karl Marx, Grundrisse

In Imperialism, the Highest Stage of Capitalism (1916), Vladimir Lenin modified classic Marxist theory and argued that capitalism necessarily induced monopoly capitalism—which he also called "imperialism"—to find new markets and resources, representing the last and highest stage of capitalism.

Some 20th-century Marxian economists consider capitalism to be a social formation where capitalist class processes dominate, but are not exclusive. To these thinkers, capitalist class processes are simply those in which surplus labor takes the form of surplus value, usable as capital while other tendencies for utilization of labor nonetheless exist simultaneously in existing societies where capitalist processes are predominant. However, other late Marxian thinkers argue that a social formation as a whole may be classed as capitalist if capitalism is the mode by which a surplus is extracted even if this surplus is not produced by capitalist activity as when an absolute majority of the population is engaged in non-capitalist economic activity.

David Harvey extends Marxian thinking through which he theorizes the differential production of place, space and political activism under capitalism. He uses Marx’s theory of crisis to aid his argument that capitalism must have its "fixes", but that we cannot predetermine what fixes will be implemented, nor in what form they will be.

This idea of fix is suggestive and could mean fix as in stabilize, heal or solve, or as in a junky needing a fix—the idea of preventing feeling worse in order to feel better. In Limits to Capital (1982), Harvey outlines an overdetermined, spatially restless capitalism coupled with the spatiality of crisis formation and its resolution. Furthermore, his work has been central for understanding the contractions of capital accumulation and international movements of capitalist modes of production and money flows.

In his essay, "Notes towards a theory of uneven geographical development", Harvey examines the causes of the extreme volatility in contemporary political economic fortunes across and between spaces of the world economy. He bases this uneven development on four conditionalities: (1) the material embedding of capital accumulation processes in the web of socio-ecological life; (2) accumulation by dispossession; (3) the law-like character of capital accumulation in space and time; and (4) political, social and "class" struggles at a variety of geographical scales.

Weberian political sociology

Max Weber in 1917

In some social sciences, the understanding of the defining characteristics of capitalism has been strongly influenced by 19th century German social theorist Max Weber. Weber considered market exchange rather than production as the defining feature of capitalism. In contrast to their counterparts in prior modes of economic activity, capitalist enterprises are characterized by their rationalization of production, directed toward maximizing efficiency and productivity, a tendency leading to a sociological process of enveloping rationalization. According to Weber, workers in pre-capitalist economic institutions understood work in terms of a personal relationship between master and journeyman in a guild, or between lord and peasant in a manor.

In his book The Protestant Ethic and the Spirit of Capitalism (1904–1905), Weber sought to trace how a particular form of religious spirit, infused into traditional modes of economic activity, was a condition of possibility of modern Western capitalism. For Weber, the spirit of capitalism was in general that of ascetic Protestantism—this ideology was able to motivate extreme rationalization of daily life, a propensity to accumulate capital by a religious ethic to advance economically and thus also the propensity to reinvest capital: this was sufficient then to create "self-mediating capital" as conceived by Marx.

This is pictured in Proverbs 22:29 "Seest thou a man diligent in his calling? He shall stand before kings" and in Colossians 3:23 "Whatever you do, do your work heartily, as for the Lord rather than for men". In the Protestant Ethic, Weber further stated that "moneymaking—provided it is done legally—is, within the modern economic order, the result and the expression of diligence in one’s calling" and "If God show you a way in which you may lawfully get more than in another way (without wrong to your soul or to any other), if you refuse this, and choose the less gainful way, you cross one of the ends of your calling, and you refuse to be God's steward, and to accept His gifts and use them for him when He requireth it: you may labour to be rich for God, though not for the flesh and sin" (p. 108).

Most generally for Weber, Western capitalism was the "rational organization of formally free labor". The idea of the "formally free" laborer meant in the double sense of Marx that the laborer was both free to own property and free of the ability to reproduce his labor power, i.e. was the victim of expropriation of his means of production. It is only on these conditions, still abundantly obvious in the modern world of Weber, that Western capitalism is able to exist.

For Weber, modern Western capitalism represented the order "now bound to the technical and economic conditions of machine production which to-day determine the lives of all the individuals who are born into this mechanism, not only those directly concerned with economic acquisition, with irresistible force. Perhaps it will so determine them until the last ton of fossilized coal is burnt" (p. 123). This is further seen in his criticism of "specialists without spirit, hedonists without a heart" that were developing in his opinion with the fading of the original Puritan "spirit" associated with capitalism.

Institutional economics

Once the main school of economic thought in the United States, institutional economics holds that capitalism cannot be separated from the political and social system within which it is embedded. It emphasizes the legal foundations of capitalism (see John R. Commons) and the evolutionary, habituated and volitional processes by which institutions are erected and then changed (see John Dewey, Thorstein Veblen and Daniel Bromley).

One key figure in institutional economics was Thorstein Veblen who in his book The Theory of the Leisure Class (1899) analyzed the motivations of wealthy people in capitalism who conspicuously consumed their riches as a way of demonstrating success. The concept of conspicuous consumption was in direct contradiction to the neoclassical view that capitalism was efficient.

In The Theory of Business Enterprise (1904), Veblen distinguished the motivations of industrial production for people to use things from business motivations that used, or misused, industrial infrastructure for profit, arguing that the former is often hindered because businesses pursue the latter. Output and technological advance are restricted by business practices and the creation of monopolies. Businesses protect their existing capital investments and employ excessive credit, leading to depressions and increasing military expenditure and war through business control of political power.

German Historical School and Austrian School

From the perspective of the German Historical School, capitalism is primarily identified in terms of the organization of production for markets. Although this perspective shares similar theoretical roots with that of Weber, its emphasis on markets and money lends it different focus. For followers of the German Historical School, the key shift from traditional modes of economic activity to capitalism involved the shift from medieval restrictions on credit and money to the modern monetary economy combined with an emphasis on the profit motive.

In the late 19th century, the German Historical School of economics diverged with the emerging Austrian School of economics, led at the time by Carl Menger. Later generations of followers of the Austrian School continued to be influential in Western economic thought through much of the 20th century. The Austrian economist Joseph Schumpeter, a forerunner of the Austrian School of economics, emphasized the "creative destruction" of capitalism—the fact that market economies undergo constant change.

At any moment of time, posits Schumpeter, there are rising industries and declining industries. Schumpeter and many contemporary economists influenced by his work argue that resources should flow from the declining to the expanding industries for an economy to grow, but they recognized that sometimes resources are slow to withdraw from the declining industries because of various forms of institutional resistance to change.

The Austrian economists Ludwig von Mises and Friedrich Hayek were among the leading defenders of market economy against 20th century proponents of socialist planned economies. Mises and Hayek argued that only market capitalism could manage a complex, modern economy.

The effect of the people's agreeing that there must be central planning, without agreeing on the ends, will be rather as if a group of people were to commit themselves to take a journey together without agreeing where they want to go; with the result that they may all have to make a journey which most of them do not want at all. — Friedrich Hayek, The Road to Serfdom

Among their arguments were the economic calculation problem, which was first proposed by Mises in 1920 and later expounded by Hayek. The problem referred to is that of how to distribute resources rationally in an economy. The free market solution is the price mechanism, wherein people individually have the ability to decide how a good or service should be distributed based on their willingness to give money for it. The price conveys embedded information about the abundance of resources as well as their desirability which in turn allows corrections that prevent shortages and surpluses on the basis of individual consensual decisions.

Mises and Hayek argued that this is the only possible solution and without the information provided by market prices socialism lacks a method to rationally allocate resources. Mises argued in a famous 1920 article "Economic Calculation in the Socialist Commonwealth" that the pricing systems in socialist economies were necessarily deficient because if government owned or controlled the means of production, then no rational prices could be obtained for capital goods as they were merely internal transfers of goods in a socialist system and not "objects of exchange", unlike final goods, therefore they were unpriced and hence the system would be necessarily inefficient since the central planners would not know how to allocate the available resources efficiently. This led him to declare "that rational economic activity is impossible in a socialist commonwealth". Mises developed his critique of socialism more completely in his 1922 book Socialism: An Economic and Sociological Analysis.

Since a modern economy produces such a large array of distinct goods and services and consists of such a large array of consumers and enterprises, asserted Mises and Hayek, the information problems facing any other form of economic organization other than market capitalism would exceed its capacity to handle information. Thinkers within supply-side economics built on the work of the Austrian School and particularly emphasize Say's law that "supply creates its own demand". To this school, capitalism is defined by lack of state restraint on the decisions of producers.

Austrian economists claim that Marx failed to make the distinction between capitalism and mercantilism. They argue that Marx conflated the imperialistic, colonialistic, protectionist and interventionist doctrines of mercantilism with capitalism.

Austrian economics has been a major influence on some forms of right-libertarianism in which laissez-faire capitalism is considered to be the ideal economic system. It influenced economists and political philosophers and theorists including Henry Hazlitt, Hans-Hermann Hoppe, Israel Kirzner, Murray Rothbard, Walter Block and Richard M. Ebeling.

Keynesian economics

In his 1937 The General Theory of Employment, Interest, and Money, the British economist John Maynard Keynes argued that capitalism suffered a basic problem in its ability to recover from periods of slowdowns in investment. Keynes argued that a capitalist economy could remain in an indefinite equilibrium despite high unemployment.

Essentially rejecting Say's law, he argued that some people may have a liquidity preference that would see them rather hold money than buy new goods or services, which therefore raised the prospect that the Great Depression would not end without what he termed in the General Theory "a somewhat comprehensive socialization of investment".

Keynesian economics challenged the notion that laissez-faire capitalist economics could operate well on their own without state intervention used to promote aggregate demand, fighting high unemployment and deflation of the sort seen during the 1930s. He and his followers recommended "pump-priming" the economy to avoid recession: cutting taxes, increasing government borrowing and spending during an economic down-turn. This was to be accompanied by trying to control wages nationally partly through the use of inflation to cut real wages and to deter people from holding money.

The right remedy for the trade cycle is not to be found in abolishing booms and thus keeping us permanently in a semi-slump; but in abolishing slumps and thus keeping us permanently in a quasi-boom. — John Maynard Keynes, The General Theory of Employment, Interest and Money

Keynes tried to provide solutions to many of Marx’s problems without completely abandoning the classical understanding of capitalism. His work attempted to show that regulation can be effective and that economic stabilizers can rein in the aggressive expansions and recessions that Marx disliked. These changes sought to create more stability in the business cycle and reduce the abuses of laborers. Keynesian economists argue that Keynesian policies were one of the primary reasons capitalism was able to recover following the Great Depression. However, the premises of Keynes’s work have since been challenged by neoclassical and supply-side economics and the Austrian School.

Another challenge to Keynesian thinking came from his colleague Piero Sraffa and subsequently from the Neo-Ricardian school that followed Sraffa. In Sraffa's highly technical analysis, capitalism is defined by an entire system of social relations among both producers and consumers, but with a primary emphasis on the demands of production. According to Sraffa, the tendency of capital to seek its highest rate of profit causes a dynamic instability in social and economic relations.

Supply-side economics

Supply-side economics is a school of macroeconomic thought that argues that economic growth can be most effectively created by lowering barriers for people to produce (supply) goods and services, such as adjusting income tax and capital gains tax rates and by allowing greater flexibility by reducing regulation. Consumers will then benefit from a greater supply of goods and services at lower prices.

The term "supply-side economics" was thought for some time to have been coined by journalist Jude Wanniski in 1975, but according to Robert D. Atkinson's Supply-Side Follies the term "supply side" ("supply-side fiscalists") was first used in 1976 by Herbert Stein (a former economic adviser to President Nixon) and only later that year was this term repeated by Jude Wanniski. Its use connotes the ideas of economists Robert Mundell and Arthur Laffer. Today, supply-side economics is often conflated with the politically rhetorical term "trickle-down economics", but as Jude Wanniski points out in his book The Way The World Works trickle-down economics is conservative Keynesianism associated with the Republican Party.

What the welfare system and other kinds of governmental programs are doing is paying people to fail. In so far as they fail, they receive the money; in so far as they succeed, even to a moderate extent, the money is taken away. — Thomas Sowell during a discussion in Milton Friedman's "Free to Choose" television series in 1980

Typical policy recommendations of supply-side economics are lower marginal tax rates and less regulation.[7] Maximum benefits from taxation policy are achieved by optimizing the marginal tax rates to spur growth, although it is a common misunderstanding that supply side economics is concerned only with taxation policy when it is about removing barriers to production more generally.

Many early proponents argued that the size of the economic growth would be significant enough that the increased government revenue from a faster-growing economy would be sufficient to compensate completely for the short-term costs of a tax cut and that tax cuts could in fact cause overall revenue to increase.

Neoclassical economics and the Chicago School

Today, the majority academic research on capitalism in the English-speaking world draws on neoclassical economic thought. It favors extensive market coordination and relatively neutral patterns of governmental market regulation aimed at maintaining property rights; deregulated labor markets; corporate governance dominated by financial owners of firms; and financial systems depending chiefly on capital market-based financing rather than state financing.

Milton Friedman took many of the basic principles set forth by Adam Smith and the classical economists and gave them a new twist. One example of this is his article in the September 1970 issue of The New York Times, where he claims that the social responsibility of business is "to use its resources and engage in activities designed to increase its profits…(through) open and free competition without deception or fraud". This is similar to Smith’s argument that self-interest in turn benefits the whole of society. Work like this helped lay the foundations for the coming marketization (or privatization) of state enterprises and the supply-side economics of Ronald Reagan and Margaret Thatcher.

The Chicago School of economics is best known for its free market advocacy and monetarist ideas. According to Friedman and other monetarists, market economies are inherently stable if left to themselves and depressions result only from government intervention.

One of the great mistakes is to judge policies and programs by their intentions rather than their results. — Milton Friedman, interview with Richard Heffner on The Open Mind (7 December 1975)

Friedman argued that the Great Depression was result of a contraction of the money supply controlled by the Federal Reserve and not by the lack of investment as John Maynard Keynes: "There is likely to be a lag between the need for action and government recognition of the need; a further lag between recognition of the need for action and the taking of action; and a still further lag between the action and its effects". Ben Bernanke, former Chairman of the Federal Reserve, is among the economists today generally accepting Friedman's analysis of the causes of the Great Depression.

Neoclassical economists, today the majority of economists, consider value to be subjective, varying from person to person and for the same person at different times and thus reject the labor theory of value. Marginalism is the theory that economic value results from marginal utility and marginal cost (the marginal concepts). These economists see capitalists as earning profits by forgoing current consumption, by taking risks, and by organizing production.

Mainstream economics

Mainstream economics is a loose term used to refer to the non-heterodox economics taught in prominent universities. It is most closely associated with neoclassical economics, or more precisely by the neoclassical synthesis, which combines neoclassical approach to microeconomics with Keynesian approach to macroeconomics.

Mainstream economists are not generally separated into schools, but two major contemporary orthodox economic schools of thought are the "saltwater and freshwater schools". The saltwater schools consist of the universities and other institutions located near the East and West Coast of the United States, such as Berkeley, Harvard, Massachusetts Institute of Technology, University of Pennsylvania, Princeton, Columbia, Duke, Stanford and Yale. Freshwater schools include the University of Chicago, Carnegie Mellon University, the University of Rochester and the University of Minnesota. They were referred to as the "freshwater school" since Pittsburgh, Chicago, Rochester and Minneapolis are located nearer to the Great Lakes.

The Saltwater school is associated with Keynesian ideas of government intervention into the free market while the Freshwater schools are skeptical of the benefits of the government. Mainstream economists do not in general identify themselves as members of a particular school, but they may be associated with approaches within a field such as the rational-expectations approach to macroeconomics.

Satellite

From Wikipedia, the free encyclopedia
 
NASA's Earth-observing fleet as of June 2019
 
A full-size model of the Earth observation satellite ERS 2

In the context of spaceflight, a satellite is an object that has been intentionally placed into orbit. These objects are called artificial satellites to distinguish them from natural satellites such as Earth's Moon.

On 4 October 1957, the Soviet Union launched the world's first artificial satellite, Sputnik 1. Since then, about 8,900 satellites from more than 40 countries have been launched. According to a 2018 estimate, about 5,000 remained in orbit. Of those, about 1,900 were operational, while the rest had exceeded their useful lives and become space debris. Approximately 63% of operational satellites are in low Earth orbit, 6% are in medium-Earth orbit (at 20,000 km), 29% are in geostationary orbit (at 36,000 km) and the remaining 2% are in various elliptical orbits. In terms of countries with the most satellites, the United States has the most with 2,944 satellites, China is second with 499, and Russia third with 169. A few large space stations, including the International Space Station, have been launched in parts and assembled in orbit. Over a dozen space probes have been placed into orbit around other bodies and become artificial satellites of the Moon, Mercury, Venus, Mars, Jupiter, Saturn, a few asteroids, a comet and the Sun.

Satellites are used for many purposes. Among several other applications, they can be used to make star maps and maps of planetary surfaces, and also take pictures of planets they are launched into. Common types include military and civilian Earth observation satellites, communications satellites, navigation satellites, weather satellites, and space telescopes. Space stations and human spacecraft in orbit are also satellites.

Satellites can operate by themselves or as part of a larger system, a satellite formation or satellite constellation.

Satellite orbits have a large range depending on the purpose of the satellite, and are classified in a number of ways. Well-known (overlapping) classes include low Earth orbit, polar orbit, and geostationary orbit.

A launch vehicle is a rocket that places a satellite into orbit. Usually, it lifts off from a launch pad on land. Some are launched at sea from a submarine or a mobile maritime platform, or aboard a plane (see air launch to orbit).

Satellites are usually semi-independent computer-controlled systems. Satellite subsystems attend many tasks, such as power generation, thermal control, telemetry, attitude control, scientific instrumentation, communication, etc.

History

Konstantin Tsiolkovsky
 
A 1949 issue of Popular Science depicts the idea of an "artificial moon"
 
Animation depicting the orbits of GPS satellites in medium Earth orbit.
 
Sputnik 1: The first artificial satellite to orbit Earth.
 
1U CubeSat ESTCube-1, developed mainly by the students from the University of Tartu, carries out a tether deployment experiment in low Earth orbit.

The first published mathematical study of the possibility of an artificial satellite was Newton's cannonball, a thought experiment by Isaac Newton to explain the motion of natural satellites, in his Philosophiæ Naturalis Principia Mathematica (1687). The first fictional depiction of a satellite being launched into orbit was a short story by Edward Everett Hale, "The Brick Moon" (1869). The idea surfaced again in Jules Verne's The Begum's Fortune (1879).

In 1903, Konstantin Tsiolkovsky (1857–1935) published Exploring Space Using Jet Propulsion Devices, which is the first academic treatise on the use of rocketry to launch spacecraft. He calculated the orbital speed required for a minimal orbit, and that a multi-stage rocket fueled by liquid propellants could achieve this.

In 1928, Herman Potočnik (1892–1929) published his sole book, The Problem of Space Travel – The Rocket Motor. He described the use of orbiting spacecraft for observation of the ground and described how the special conditions of space could be useful for scientific experiments.

In a 1945 Wireless World article, the English science fiction writer Arthur C. Clarke described in detail the possible use of communications satellites for mass communications. He suggested that three geostationary satellites would provide coverage over the entire planet.

In May 1946, the United States Air Force's Project RAND released the Preliminary Design of an Experimental World-Circling Spaceship, which stated that "A satellite vehicle with appropriate instrumentation can be expected to be one of the most potent scientific tools of the Twentieth Century." The United States had been considering launching orbital satellites since 1945 under the Bureau of Aeronautics of the United States Navy. Project RAND eventually released the report, but considered the satellite to be a tool for science, politics, and propaganda, rather than a potential military weapon.

In 1946, American theoretical astrophysicist Lyman Spitzer proposed an orbiting space telescope.

In February 1954 Project RAND released "Scientific Uses for a Satellite Vehicle", written by R.R. Carhart. This expanded on potential scientific uses for satellite vehicles and was followed in June 1955 with "The Scientific Use of an Artificial Satellite", by H.K. Kallmann and W.W. Kellogg.

In the context of activities planned for the International Geophysical Year (1957–58), the White House announced on 29 July 1955 that the U.S. intended to launch satellites by the spring of 1958. This became known as Project Vanguard. On 31 July, the Soviets announced that they intended to launch a satellite by the fall of 1957.

The first artificial satellite was Sputnik 1, launched by the Soviet Union on 4 October 1957 under the Sputnik program, with Sergei Korolev as chief designer. Sputnik 1 helped to identify the density of high atmospheric layers through measurement of its orbital change and provided data on radio-signal distribution in the ionosphere. The unanticipated announcement of Sputnik 1's success precipitated the Sputnik crisis in the United States and ignited the so-called Space Race within the Cold War.

Sputnik 2 was launched on 3 November 1957 and carried the first living passenger into orbit, a dog named Laika.

In early 1955, following pressure by the American Rocket Society, the National Science Foundation, and the International Geophysical Year, the Army and Navy were working on Project Orbiter with two competing programs. The army used the Jupiter C rocket, while the civilian/Navy program used the Vanguard rocket to launch a satellite. Explorer 1 became the United States' first artificial satellite on 31 January 1958.

In June 1961, three-and-a-half years after the launch of Sputnik 1, the United States Space Surveillance Network cataloged 115 Earth-orbiting satellites.

Early satellites were constructed to unique designs. With advancements in technology, multiple satellites began to be built on single model platforms called satellite buses. The first standardized satellite bus design was the HS-333 geosynchronous (GEO) communication satellite launched in 1972. Beginning in 1997, FreeFlyer is a commercial off-the-shelf software application for satellite mission analysis, design and operations.

Currently the largest artificial satellite ever is the International Space Station.

Tracking

Satellites can be tracked from Earth stations and also from other satellites.

Space Surveillance Network

The United States Space Surveillance Network (SSN), a division of the United States Strategic Command, has been tracking objects in Earth's orbit since 1957 when the Soviet Union opened the Space Age with the launch of Sputnik I. Since then, the SSN has tracked more than 26,000 objects. The SSN currently tracks more than 8,000-artificial orbiting objects. The rest have re-entered Earth's atmosphere and disintegrated, or survived re-entry and impacted the Earth. The SSN tracks objects that are 10 centimeters in diameter or larger; those now orbiting Earth range from satellites weighing several tons to pieces of spent rocket bodies weighing only 10 pounds. About seven percent are operational satellites (i.e. ~560 satellites), the rest are space debris. The United States Strategic Command is primarily interested in the active satellites, but also tracks space debris which upon reentry might otherwise be mistaken for incoming missiles.

Services

There are three basic categories of (non-military) satellite services:

Fixed satellite services

Fixed satellite services handle hundreds of billions of voice, data, and video transmission tasks across all countries and continents between certain points on the Earth's surface.

Mobile satellite systems

Mobile satellite systems help connect remote regions, vehicles, ships, people and aircraft to other parts of the world and/or other mobile or stationary communications units, in addition to serving as navigation systems.

Scientific research satellites (commercial and noncommercial)

Scientific research satellites provide meteorological information, land survey data (e.g. remote sensing), Amateur (HAM) Radio, and other different scientific research applications such as earth science, marine science, and atmospheric research.

Classification

  • Astronomical satellites are satellites used for observation of distant planets, galaxies, and other outer space objects.
  • Biosatellites are satellites designed to carry living organisms, generally for scientific experimentation.
  • Communication satellites are satellites stationed in space for the purpose of telecommunications. Modern communications satellites typically use geosynchronous orbits, Molniya orbits or Low Earth orbits.
  • Earth observation satellites are satellites intended for non-military uses such as environmental monitoring, meteorology, map making etc. (See especially Earth Observing System.)
  • Navigational satellites are satellites that use radio time signals transmitted to enable mobile receivers on the ground to determine their exact location. The relatively clear line of sight between the satellites and receivers on the ground, combined with ever-improving electronics, allows satellite navigation systems to measure location to accuracies on the order of a few meters in real time.
  • Killer satellites are satellites that are designed to destroy enemy warheads, satellites, and other space assets.
  • Crewed spacecraft (spaceships) are large satellites able to put humans into (and beyond) an orbit, and return them to Earth. (The Lunar Module of the U.S. Apollo program was an exception, in that it did not have the capability of returning human occupants to Earth.) Spacecraft including spaceplanes of reusable systems have major propulsion or landing facilities. They can be used as transport to and from the orbital stations.
  • Miniaturized satellites are satellites of unusually low masses and small sizes. New classifications are used to categorize these satellites: minisatellite (500–1000 kg), microsatellite (below 100 kg), nanosatellite (below 10 kg).
  • Reconnaissance satellites are Earth observation satellite or communications satellite deployed for military or intelligence applications. Very little is known about the full power of these satellites, as governments who operate them usually keep information pertaining to their reconnaissance satellites classified.
  • Recovery satellites are satellites that provide a recovery of reconnaissance, biological, space-production and other payloads from orbit to Earth.
  • Space-based solar power satellites are proposed satellites that would collect energy from sunlight and transmit it for use on Earth or other places.
  • Space stations are artificial orbital structures that are designed for human beings to live on in outer space. A space station is distinguished from other crewed spacecraft by its lack of major propulsion or landing facilities. Space stations are designed for medium-term living in orbit, for periods of weeks, months, or even years.
International Space Station

Orbits

Various earth orbits to scale; cyan represents low earth orbit, yellow represents medium earth orbit, the black dashed line represents geosynchronous orbit, the green dash-dot line the orbit of Global Positioning System (GPS) satellites, and the red dotted line the orbit of the International Space Station (ISS).

The first satellite, Sputnik 1, was put into orbit around Earth and was therefore in geocentric orbit. This is the most common type of orbit by far, with approximately 3,372 active artificial satellites orbiting the Earth. Geocentric orbits may be further classified by their altitude, inclination and eccentricity.

The commonly used altitude classifications of geocentric orbit are Low Earth orbit (LEO), Medium Earth orbit (MEO) and High Earth orbit (HEO). Low Earth orbit is any orbit below 2,000 km. Medium Earth orbit is any orbit between 2,000 and 35,786 km. High Earth orbit is any orbit higher than 35,786 km.

Centric classifications

Altitude classifications

Orbital Altitudes of several significant satellites of earth.

Inclination classifications

Eccentricity classifications

  • Circular orbit: An orbit that has an eccentricity of 0 and whose path traces a circle.
    • Hohmann transfer orbit: An orbit that moves a spacecraft from one approximately circular orbit, usually the orbit of a planet, to another, using two engine impulses. The perihelion of the transfer orbit is at the same distance from the Sun as the radius of one planet's orbit, and the aphelion is at the other. The two rocket burns change the spacecraft's path from one circular orbit to the transfer orbit, and later to the other circular orbit. This maneuver was named after Walter Hohmann.
  • Elliptic orbit: An orbit with an eccentricity greater than 0 and less than 1 whose orbit traces the path of an ellipse.

Synchronous classifications

  • Synchronous orbit: An orbit where the satellite has an orbital period equal to the average rotational period (earth's is: 23 hours, 56 minutes, 4.091 seconds) of the body being orbited and in the same direction of rotation as that body. To a ground observer such a satellite would trace an analemma (figure 8) in the sky.
  • Semi-synchronous orbit (SSO): An orbit with an altitude of approximately 20,200 km (12,600 mi) and an orbital period equal to one-half of the average rotational period (Earth's is approximately 12 hours) of the body being orbited
  • Geosynchronous orbit (GSO): Orbits with an altitude of approximately 35,786 km (22,236 mi). Such a satellite would trace an analemma (figure 8) in the sky.
    • Geostationary orbit (GEO): A geosynchronous orbit with an inclination of zero. To an observer on the ground this satellite would appear as a fixed point in the sky.
    • Supersynchronous orbit: A disposal / storage orbit above GSO/GEO. Satellites will drift west. Also a synonym for Disposal orbit.
    • Subsynchronous orbit: A drift orbit close to but below GSO/GEO. Satellites will drift east.
    • Graveyard orbit: An orbit a few hundred kilometers above geosynchronous that satellites are moved into at the end of their operation.
      • Disposal orbit: A synonym for graveyard orbit.
      • Junk orbit: A synonym for graveyard orbit.
  • Areosynchronous orbit: A synchronous orbit around the planet Mars with an orbital period equal in length to Mars' sidereal day, 24.6229 hours.
  • Areostationary orbit (ASO): A circular areosynchronous orbit on the equatorial plane and about 17000 km (10557 miles) above the surface. To an observer on the ground this satellite would appear as a fixed point in the sky.
  • Heliosynchronous orbit: A heliocentric orbit about the Sun where the satellite's orbital period matches the Sun's period of rotation. These orbits occur at a radius of 24,360 Gm (0.1628 AU) around the Sun, a little less than half of the orbital radius of Mercury.

Special classifications

Pseudo-orbit classifications

  • Horseshoe orbit: An orbit that appears to a ground observer to be orbiting a certain planet but is actually in co-orbit with the planet. See asteroids 3753 (Cruithne) and 2002 AA29.
  • Suborbital spaceflight: A maneuver where a spacecraft approaches the height of orbit but lacks the velocity to sustain it.
  • Lunar transfer orbit (LTO)
  • Prograde orbit: An orbit with an inclination of less than 90°. Or rather, an orbit that is in the same direction as the rotation of the primary.
  • Retrograde orbit: An orbit with an inclination of more than 90°. Or rather, an orbit counter to the direction of rotation of the planet. Apart from those in sun-synchronous orbit, few satellites are launched into retrograde orbit because the quantity of fuel required to launch them is much greater than for a prograde orbit. This is because when the rocket starts out on the ground, it already has an eastward component of velocity equal to the rotational velocity of the planet at its launch latitude.
  • Halo orbit and Lissajous orbit: Orbits "around" Lagrangian points.

Subsystems

The satellite's functional versatility is embedded within its technical components and its operations characteristics. Looking at the "anatomy" of a typical satellite, one discovers two modules. Note that some novel architectural concepts such as Fractionated spacecraft somewhat upset this taxonomy.

Spacecraft bus or service module

The bus module consists of the following subsystems:

Structure

The structural subsystem provides the mechanical base structure with adequate stiffness to withstand stress and vibrations experienced during launch, maintain structural integrity and stability while on station in orbit, and shields the satellite from extreme temperature changes and micro-meteorite damage.

Telemetry

The telemetry subsystem (aka Command and Data Handling, C&DH) monitors the on-board equipment operations, transmits equipment operation data to the earth control station, and receives the earth control station's commands to perform equipment operation adjustments.

Power

The power subsystem may consist of solar panels to convert solar energy into electrical power, regulation and distribution functions, and batteries that store power and supply the satellite when it passes into the Earth's shadow. Nuclear power sources (Radioisotope thermoelectric generator) have also been used in several successful satellite programs including the Nimbus program (1964–1978).

Thermal control

The thermal control subsystem helps protect electronic equipment from extreme temperatures due to intense sunlight or the lack of sun exposure on different sides of the satellite's body (e.g. optical solar reflector)

Attitude and orbit control

The attitude and orbit control subsystem consists of sensors to measure vehicle orientation, control laws embedded in the flight software, and actuators (reaction wheels, thrusters). These apply the torques and forces needed to re-orient the vehicle to the desired altitude, keep the satellite in the correct orbital position, and keep antennas pointed in the right directions.

Communications

The second major module is the communication payload, which is made up of transponders. A transponder is capable of :

  • Receiving uplinked radio signals from earth satellite transmission stations (antennas).
  • Amplifying received radio signals
  • Sorting the input signals and directing the output signals through input/output signal multiplexers to the proper downlink antennas for retransmission to earth satellite receiving stations (antennas).

End of life

When satellites reach the end of their mission (this normally occurs within 3 or 4 years after launch), satellite operators have the option of de-orbiting the satellite, leaving the satellite in its current orbit or moving the satellite to a graveyard orbit. Historically, due to budgetary constraints at the beginning of satellite missions, satellites were rarely designed to be de-orbited. One example of this practice is the satellite Vanguard 1. Launched in 1958, Vanguard 1, the 4th artificial satellite to be put in Geocentric orbit, was still in orbit as of February 2022, as well as the upper stage of its launch rocket.

Instead of being de-orbited, most satellites are either left in their current orbit or moved to a graveyard orbit. As of 2002, the FCC requires all geostationary satellites to commit to moving to a graveyard orbit at the end of their operational life prior to launch. In cases of uncontrolled de-orbiting, the major variable is the solar flux, and the minor variables the components and form factors of the satellite itself, and the gravitational perturbations generated by the Sun and the Moon (as well as those exercised by large mountain ranges, whether above or below sea level). The nominal breakup altitude due to aerodynamic forces and temperatures is 78 km, with a range between 72 and 84 km. Solar panels, however, are destroyed before any other component at altitudes between 90 and 95 km.

Launch-capable countries

This list includes countries with an independent capability to place satellites in orbit, including production of the necessary launch vehicle. Note: many more countries have the capability to design and build satellites but are unable to launch them, instead relying on foreign launch services. This list does not consider those numerous countries, but only lists those capable of launching satellites indigenously, and the date this capability was first demonstrated. The list does not include the European Space Agency, a multi-national state organization, nor private consortiums.

First launch by country
Order Country Date of first launch Rocket Satellite(s)
1 Soviet Union 4 October 1957 Sputnik-PS Sputnik 1
2 United States 1 February 1958 Juno I Explorer 1
3 France 26 November 1965 Diamant-A Astérix
4 Japan 11 February 1970 Lambda-4S Ohsumi
5 China 24 April 1970 Long March 1 Dong Fang Hong I
6 United Kingdom 28 October 1971 Black Arrow Prospero
7 India 18 July 1980 SLV Rohini RS-1
8 Israel 19 September 1988 Shavit Ofeq 1
Russia 21 January 1992 Soyuz-U Kosmos 2175
Ukraine 13 July 1992 Tsyklon-3 Strela
9 Iran 2 February 2009 Safir-1 Omid
10 North Korea 12 December 2012 Unha-3 Kwangmyŏngsŏng-3 Unit 2
11 South Korea 30 January 2013 Naro-1 STSAT-2C
12 New Zealand 12 November 2018 Electron CubeSat

Attempted first launches

  • The United States tried in 1957 to launch the first satellite using its own launcher before successfully completing a launch in 1958.
  • Japan tried four times in 1966–1969 to launch a satellite with its own launcher before successfully completing a launch in 1970.
  • China tried in 1969 to launch the first satellite using its own launcher before successfully completing a launch in 1970.
  • India, after launching its first national satellite using a foreign launcher in 1975, tried in 1979 to launch the first satellite using its own launcher before succeeding in 1980.
  • Iraq have claimed an orbital launch of a warhead in 1989, but this claim was later disproved.
  • Brazil, after launching its first national satellite using a foreign launcher in 1985, tried to launch a satellite using its own VLS 1 launcher three times in 1997, 1999, and 2003, but all attempts were unsuccessful.
  • North Korea claimed a launch of Kwangmyŏngsŏng-1 and Kwangmyŏngsŏng-2 satellites in 1998 and 2009, but U.S., Russian and other officials and weapons experts later reported that the rockets failed to send a satellite into orbit, if that was the goal. The United States, Japan and South Korea believe this was actually a ballistic missile test, which was a claim also made after North Korea's 1998 satellite launch, and later rejected. The first (April 2012) launch of Kwangmyŏngsŏng-3 was unsuccessful, a fact publicly recognized by the DPRK. However, the December 2012 launch of the "second version" of Kwangmyŏngsŏng-3 was successful, putting the DPRK's first confirmed satellite into orbit.
  • South Korea (Korea Aerospace Research Institute), after launching their first national satellite by foreign launcher in 1992, unsuccessfully tried to launch its own launcher, the KSLV (Naro)-1, (created with the assistance of Russia) in 2009 and 2010 until success was achieved in 2013 by Naro-3.
  • The First European multi-national state organization ELDO tried to make the orbital launches at Europa I and Europa II rockets in 1968–1970 and 1971 but stopped operation after failures.

Other notes

  • ^ Russia and Ukraine were parts of the Soviet Union and thus inherited their launch capability without the need to develop it indigenously. Through the Soviet Union they are also on the number one position in this list of accomplishments.
  • France, the United Kingdom, and Ukraine launched their first satellites by own launchers from foreign spaceports.
  • Some countries such as South Africa, Spain, Italy, Germany, Canada, Australia, Argentina, Egypt and private companies such as OTRAG, have developed their own launchers, but have not had a successful launch.
  • Only twelve, countries from the list below (USSR, USA, France, Japan, China, UK, India, Russia, Ukraine, Israel, Iran and North Korea) and one regional organization (the European Space Agency, ESA) have independently launched satellites on their own indigenously developed launch vehicles.
  • Several other countries, including Brazil, Argentina, Pakistan, Romania, Taiwan, Indonesia, Australia, Malaysia, Turkey and Switzerland are at various stages of development of their own small-scale launcher capabilities.

Launch capable private entities

Orbital Sciences Corporation launched a satellite into orbit on the Pegasus in 1990. SpaceX launched a satellite into orbit on the Falcon 1 in 2008. Rocket Lab launched three cubesats into orbit on the Electron in 2018.

First satellites of countries

  orbital launch and satellite operation
  satellite operation, launched by foreign supplier
  satellite in development
  orbital launch project at advanced stage or indigenous ballistic missiles deployed

While Canada was the third country to build a satellite which was launched into space, it was launched aboard an American rocket from an American spaceport. The same goes for Australia, who launched first satellite involved a donated U.S. Redstone rocket and American support staff as well as a joint launch facility with the United Kingdom. The first Italian satellite San Marco 1 launched on 15 December 1964 on a U.S. Scout rocket from Wallops Island (Virginia, United States) with an Italian launch team trained by NASA. By similar occasions, almost all further first national satellites was launched by foreign rockets.

Attempted first satellites

  • United States tried unsuccessfully to launch its first satellite in 1957; they were successful in 1958.
  • China tried unsuccessfully to launch its first satellite in 1969; they were successful in 1970.
  • Chile tried unsuccessfully in 1995 to launch its first satellite FASat-Alfa by foreign rocket; in 1998 they were successful.†
  • North Korea has tried in 1998, 2009, 2012 to launch satellites, first successful launch on 12 December 2012.
  • Libya since 1996 developed its own national Libsat satellite project with the goal of providing telecommunication and remote sensing services that was postponed after the fall of Gaddafi.
  • Belarus tried unsuccessfully in 2006 to launch its first satellite BelKA by foreign rocket.†

†-note: Both Chile and Belarus used Russian companies as principal contractors to build their satellites, they used Russian-Ukrainian manufactured rockets and launched either from Russia or Kazakhstan.

Planned first satellites

  • Armenia founded ArmCosmos in 2012 and announced an intention to create and launch the countries first telecommunication satellite, named ArmSat. The investment estimate is $250 million and potential contractors for building the satellite includes Russia, China and Canada.
  • Cambodia's Royal Group plans to purchase for $250–350 million and launch in the beginning of 2013 the telecommunication satellite.
  • Cayman Islands's Global IP Cayman private company plans to launch GiSAT-1 geostationary communications satellite in 2018.
  • Democratic Republic of Congo ordered at November 2012 in China (Academy of Space Technology (CAST) and Great Wall Industry Corporation (CGWIC)) the first telecommunication satellite CongoSat-1 which will be built on DFH-4 satellite bus platform and will be launched in China till the end of 2015.
  • Croatia has a goal to construct a satellite by 2013–2014. Launch into Earth orbit would be done by a foreign provider.
  • Ireland's team of Dublin Institute of Technology intends to launch the first Irish satellite within European University program CubeSat QB50.
  • Republic of Moldova's first remote sensing satellite plans to start in 2013 by Space centre at national Technical University.
  • Myanmar plans to purchase for $200 million their own telecommunication satellite.
  • Nicaragua ordered for $254 million at November 2013 in China the first telecommunication satellite Nicasat-1 (to be built at DFH-4 satellite bus platform by CAST and CGWIC), that planning to launch in China at 2016.
  • Paraguay under new Agencia Espacial del Paraguay –- AEP airspace agency plans first Eart observation satellite.
  • Serbia's first satellite Tesla-1 was designed, developed and assembled by nongovernmental organisations in 2009 but still remains unlaunched.
  • Sri Lanka has a goal to construct two satellites beside of rent the national SupremeSAT payload in Chinese satellites. Sri Lankan Telecommunications Regulatory Commission has signed an agreement with Surrey Satellite Technology Ltd to get relevant help and resources. Launch into Earth orbit would be done by a foreign provider.
  • Syrian Space Research Center developing CubeSat-like small first national satellite since 2008.
  • Tunisia is developing its first satellite, ERPSat01. Consisting of a CubeSat of 1 kg mass, it will be developed by the Sfax School of Engineering. ERPSat satellite is planned to be launched into orbit in 2013.
  • Uzbekistan's State Space Research Agency (UzbekCosmos) announced in 2001 about intention of launch in 2002 first remote sensing satellite. Later in 2004 was stated that two satellites (remote sensing and telecommunication) will be built by Russia for $60–70 million each
  • Bangladesh launched Bangabandhu-1, its first satellite, for geostationary communications and broadcasting. It was manufactured by Thales Alenia Space and launched on 12 May 2018 and launched by Falcon 9 Block 5 of SpaceX.

Attacks on satellites

Since the mid-2000s, satellites have been hacked by militant organizations to broadcast propaganda and to pilfer classified information from military communication networks.

For testing purposes, satellites in low earth orbit have been destroyed by ballistic missiles launched from earth. Russia, United States, China and India have demonstrated the ability to eliminate satellites. In 2007 the Chinese military shot down an aging weather satellite, followed by the US Navy shooting down a defunct spy satellite in February 2008. On 27 March 2019 India shot down a live test satellite at 300 km altitude in 3 minutes. India became the fourth country to have the capability to destroy live satellites.

Jamming

Due to the low received signal strength of satellite transmissions, they are prone to jamming by land-based transmitters. Such jamming is limited to the geographical area within the transmitter's range. GPS satellites are potential targets for jamming, but satellite phone and television signals have also been subjected to jamming.

Also, it is very easy to transmit a carrier radio signal to a geostationary satellite and thus interfere with the legitimate uses of the satellite's transponder. It is common for Earth stations to transmit at the wrong time or on the wrong frequency in commercial satellite space, and dual-illuminate the transponder, rendering the frequency unusable. Satellite operators now have sophisticated monitoring that enables them to pinpoint the source of any carrier and manage the transponder space effectively.

Earth observation

During the last five decades, space agencies have sent thousands of space crafts, space capsules, or satellites to the universe. In fact, weather forecasters make predictions on the weather and natural calamities based on observations from these satellites.

The National Aeronautics and Space Administration (NASA) requested the National Academies to publish a report, "Earth Observations from Space; The First 50 Years of Scientific Achievements", in 2008. It described how the capability to view the whole globe simultaneously from satellite observations revolutionized studies about the planet Earth. This development brought about a new age of combined Earth sciences. The National Academies report concluded that continuing Earth observations from the galaxy are necessary to resolve scientific and social challenges in the future.

NASA

The NASA introduced an Earth Observing System (EOS) composed of several satellites, science component, and data system described as the Earth Observing System Data and Information System (EOSDIS). It disseminates numerous science data products as well as services designed for interdisciplinary education. EOSDIS data can be accessed online and accessed through File Transfer Protocol (FTP) and Hyper Text Transfer Protocol Secure (HTTPS). Scientists and researchers perform EOSDIS science operations within a distributed platform of multiple interconnected nodes or Science Investigator-led Processing Systems (SIPS) and discipline-specific Distributed Active Archive Centers (DACCs).

ESA

The European Space Agency have been operating Earth Observation satellites since the launch of Meteosat 1 in November 1977. ESA currently has plans to launch a satellite equipped with an artificial intelligence (AI) processor that will allow the spacecraft to make decisions on images to capture and data to transmit to the Earth. BrainSat will use the Intel Myriad X vision processing unit (VPU). The launching will be scheduled in 2019. ESA director for Earth Observation Programs Josef Aschbacher made the announcement during the PhiWeek in November 2018. This is the five-day meet that focused on the future of Earth observation. The conference was held at the ESA Center for Earth Observation in Frascati, Italy. ESA also launched the PhiLab, referring to the future-focused team that works to harness the potentials of AI and other disruptive innovations. Meanwhile, the ESA also announced that it expects to commence the qualification flight of the Space Rider space plane in 2021. This will come after several demonstration missions. Space Rider is the sequel of the Agency's Intermediate Experimental vehicle (IXV) which was launched in 2015. It has the capacity payload of 800 kilograms for orbital missions that will last a maximum of two months.

Pollution and regulation

Generally liability has been covered by the Liability Convention. Issues like space debris, radio and light pollution are increasing in magnitude and at the same time lack progress in national or international regulation. Space debris poses dangers to spacecraft (including satellites) in or crossing geocentric orbits and have the potential to drive a Kessler syndrome.

With the increase in numbers of satellite constellations, like SpaceX Starlink, the astronomical community, such as the IAU, report that orbital pollution is getting increased significantly. A report from the SATCON1 workshop in 2020 concluded that the effects of large satellite constellations can severely affect some astronomical research efforts and lists six ways to mitigate harm to astronomy. The IAU is establishing a center (CPS) to coordinate or aggregate measures to mitigate such detrimental effects.

Some notable satellite failures that polluted and dispersed radioactive materials are Kosmos 954, Kosmos 1402 and the Transit 5-BN-3. Using wood as an alternative material has been posited in order to reduce pollution and debris from satellites that reenter the atmosphere.

Open source satellites

Several open source satellites both in terms of open source hardware and open source software were flown or are in development. The satellites have usually form of a CubeSat or PocketQube. In 2013 an amateur radio satellite OSSI-1 was launched and remained in orbit for about 2 months. In 2017 UPSat created by the Greek University of Patras and Libre Space Foundation remained in orbit for 18 months. In 2019 FossaSat-1 was launched. As of February 2021 the Portland State Aerospace Society is developing two open source satellites called OreSat and the Libre Space Foundation also has ongoing satellite projects.

Satellite services

Operator (computer programming)

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