European Space Agency

ESA LOGO.svg
ESA Headquarters in Paris, France.JPG
ESA Headquarters in Paris, France
Abbreviation
  • ESA
  • ASE
Formation30 May 1975; 43 years ago (1975-05-30)
HeadquartersParis, Île-de-France, France
Official language
English, French and German[1][2]
Administrator
Johann-Dietrich Wörner
Director General
Guiana Space Centre
Parent organisation
Budget
Decrease 5.6 billion
(~US$7 billion) (2018)[3]
Websitewww.esa.int

The European Space Agency (ESA; French: Agence spatiale européenne, ASE;[4][5] German: Europäische Weltraumorganisation) is an intergovernmental organisation of 22 member states[6] dedicated to the exploration of space. Established in 1975 and headquartered in Paris, France, ESA has a worldwide staff of about 2,000[7] and an annual budget of about €5.6 billion (~US$7 billion) in 2018.[3]

ESA's space flight programme includes human spaceflight (mainly through participation in the International Space Station program); the launch and operation of unmanned exploration missions to other planets and the Moon; Earth observation, science and telecommunication; designing launch vehicles; and maintaining a major spaceport, the Guiana Space Centre at Kourou, French Guiana. The main European launch vehicle Ariane 5 is operated through Arianespace with ESA sharing in the costs of launching and further developing this launch vehicle. The agency is also working with NASA to manufacture the Orion Spacecraft service module, that will fly on the Space Launch System.[8][9]

The agency's facilities are distributed among the following centres:

History

Foundation

ESTEC buildings in Noordwijk, Netherlands. ESTEC was the main technical centre of ESRO and remains so for the successor organisation, ESA.

After World War II, many European scientists left Western Europe in order to work with the United States. Although the 1950s boom made it possible for Western European countries to invest in research and specifically in space-related activities, Western European scientists realised solely national projects would not be able to compete with the two main superpowers. In 1958, only months after the Sputnik shock, Edoardo Amaldi (Italy) and Pierre Auger (France), two prominent members of the Western European scientific community, met to discuss the foundation of a common Western European space agency. The meeting was attended by scientific representatives from eight countries, including Harrie Massey (United Kingdom).

The Western European nations decided to have two agencies: one concerned with developing a launch system, ELDO (European Launch Development Organization), and the other the precursor of the European Space Agency, ESRO (European Space Research Organisation). The latter was established on 20 March 1964 by an agreement signed on 14 June 1962. From 1968 to 1972, ESRO launched seven research satellites.

ESA in its current form was founded with the ESA Convention in 1975, when ESRO was merged with ELDO. ESA had ten founding member states: Belgium, Denmark, France, West Germany, Italy, the Netherlands, Spain, Sweden, Switzerland, and the United Kingdom.[10] These signed the ESA Convention in 1975 and deposited the instruments of ratification by 1980, when the convention came into force. During this interval the agency functioned in a de facto fashion. ESA launched its first major scientific mission in 1975, Cos-B, a space probe monitoring gamma-ray emissions in the universe, which was first worked on by ESRO.

Later activities

The ESA collaborated with NASA on the International Ultraviolet Explorer (IUE), the world's first high-orbit telescope, which was launched in 1978 and operated successfully for 18 years. A number of successful Earth-orbit projects followed, and in 1986 ESA began Giotto, its first deep-space mission, to study the comets Halley and Grigg–Skjellerup. Hipparcos, a star-mapping mission, was launched in 1989 and in the 1990s SOHO, Ulysses and the Hubble Space Telescope were all jointly carried out with NASA. Later scientific missions in cooperation with NASA include the Cassini–Huygens space probe, to which ESA contributed by building the Titan landing module Huygens.

As the successor of ELDO, ESA has also constructed rockets for scientific and commercial payloads. Ariane 1, launched in 1979, carried mostly commercial payloads into orbit from 1984 onward. The next two versions of the Ariane rocket were intermediate stages in the development of a more advanced launch system, the Ariane 4, which operated between 1988 and 2003 and established ESA as the world leader[citation needed] in commercial space launches in the 1990s. Although the succeeding Ariane 5 experienced a failure on its first flight, it has since firmly established itself within the heavily competitive commercial space launch market with 82 successful launches until 2018. The successor launch vehicle of Ariane 5, the Ariane 6, is under development and is envisioned to enter service in the 2020s.

The beginning of the new millennium saw ESA become, along with agencies like NASA, JAXA, ISRO, CSA and Roscosmos, one of the major participants in scientific space research. Although ESA had relied on co-operation with NASA in previous decades, especially the 1990s, changed circumstances (such as tough legal restrictions on information sharing by the United States military) led to decisions to rely more on itself and on co-operation with Russia. A 2011 press issue thus stated:[11]

Russia is ESA's first partner in its efforts to ensure long-term access to space. There is a framework agreement between ESA and the government of the Russian Federation on cooperation and partnership in the exploration and use of outer space for peaceful purposes, and cooperation is already underway in two different areas of launcher activity that will bring benefits to both partners.

Notable outcomes are ESA's include SMART-1, a probe testing cutting-edge new space propulsion technology, the Mars Express and Venus Express missions, as well as the development of the Ariane 5 rocket and its role in the ISS partnership. ESA maintains its scientific and research projects mainly for astronomy-space missions such as Corot, launched on 27 December 2006, a milestone in the search for exoplanets.

Other Languages
беларуская (тарашкевіца)‎: Эўрапейская касьмічная агенцыя
føroyskt: ESA
furlan: ESA
galego: ESA
한국어: 유럽 우주국
Bahasa Indonesia: European Space Agency
Kiswahili: ESA
Lëtzebuergesch: European Space Agency
lumbaart: ESA
مازِرونی: اسا (سازمان)
Bahasa Melayu: Agensi Angkasa Eropah
oʻzbekcha/ўзбекча: Yevropa kosmik agentligi
sicilianu: ESA
Simple English: European Space Agency
srpskohrvatski / српскохрватски: Evropska svemirska agencija
татарча/tatarça: Awrupa ğälämi agentlığı
тоҷикӣ: Еврокосмос