Organization:European Space Agency

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Short description: European organisation dedicated to the exploration of space

Coordinates: 48°50′54″N 2°18′15″E / 48.8482°N 2.3042°E / 48.8482; 2.3042

European Space Agency
ESA emblem seal.png
European Space Agency logo.svg
ESA Headquarters in Paris, France.JPG
Headquarters in Paris, France
Agency overview
  • ESA
  • ASE
Formed30 May 1975; 46 years ago (1975-05-30)
TypeSpace agency
HeadquartersParis , Île-de-France, France
Official languageFrench, English and German[1][2]
AdministratorJosef Aschbacher
Director General
Primary spaceportGuiana Space Centre
Annual budgetDecrease €6.5 billion (2021)[3]

The European Space Agency (ESA; French: Agence spatiale européenne About this soundpronunciation , 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 , ESA has a worldwide staff of about 2,200 in 2018[7] and an annual budget of about €6.5 billion in 2021.[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:

The European Space Agency Science Programme is a long-term programme of space science and space exploration missions.



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 Launcher Development Organisation), 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

Mock-up of the Ariane 1

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[11] 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, the 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:[12]

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 ESA programmes include SMART-1, a probe testing cutting-edge 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.

On 21 January 2019, ArianeGroup and Arianespace announced a one-year contract with ESA to study and prepare for a mission to mine the Moon for lunar regolith.[13]


The treaty establishing the European Space Agency reads:[14]

The purpose of the Agency shall be to provide for and to promote, for exclusively peaceful purposes, cooperation among European States in space research and technology and their space applications, with a view to their being used for scientific purposes and for operational space applications systems…

ESA is responsible for setting a unified space and related industrial policy, recommending space objectives to the member states, and integrating national programs like satellite development, into the European program as much as possible.[14]

Jean-Jacques Dordain – ESA's Director General (2003–2015) – outlined the European Space Agency's mission in a 2003 interview:[15]

Today space activities have pursued the benefit of citizens, and citizens are asking for a better quality of life on Earth. They want greater security and economic wealth, but they also want to pursue their dreams, to increase their knowledge, and they want younger people to be attracted to the pursuit of science and technology. I think that space can do all of this: it can produce a higher quality of life, better security, more economic wealth, and also fulfill our citizens' dreams and thirst for knowledge, and attract the young generation. This is the reason space exploration is an integral part of overall space activities. It has always been so, and it will be even more important in the future.

Activities and programmes

ESA describes its work in two overlapping ways:

  • For the general public, the various fields of work are described as "Activities".
  • Budgets are organised as "Programmes".

These are either mandatory or optional.


According to the ESA website, the activities are:

  • Observing the Earth
  • Human Spaceflight
  • Launchers
  • Navigation
  • Space Science
  • Space Engineering & Technology
  • Operations
  • Telecommunications & Integrated Applications
  • Preparing for the Future
  • Space for Climate



Every member country must contribute to these programmes:[19]

  • Technology Development Element Programme[20]
  • Science Core Technology Programme
  • General Study Programme
  • European Component Initiative


Depending on their individual choices the countries can contribute to the following programmes, listed according to:[21]

  • Launchers
  • Earth Observation
  • Human Spaceflight and Exploration
  • Telecommunications
  • Navigation
  • Space Situational Awareness
  • Technology


ESA has formed partnerships with universities. ESA_LAB@ refers to research laboratories at universities. Currently there are ESA_LAB@

Member states, funding and budget

Membership and contribution to ESA

  ESA member states
  ESA associate members
  European cooperating states (ECS)
  Signatories of the Cooperation Agreement

By 2015, ESA was an intergovernmental organisation of 22 member states.[6] Member states participate to varying degrees in the mandatory (25% of total expenditures in 2008) and optional space programmes (75% of total expenditures in 2008).[27] The 2008 budget amounted to €3.0 billion whilst the 2009 budget amounted to €3.6 billion.[28] The total budget amounted to about €3.7 billion in 2010, €3.99 billion in 2011, €4.02 billion in 2012, €4.28 billion in 2013, €4.10 billion in 2014 and €4.33 billion in 2015.[29]

English is the main language within ESA. Additionally, official documents are also provided in German and documents regarding the Spacelab are also provided in Italian. If found appropriate, the agency may conduct its correspondence in any language of a member state.

The following table lists all the member states and adjunct members, their ESA convention ratification dates, and their contributions in 2020:[30]

Member state,
or source
(mill. €) Of total Per capita (€)[31]
Full member states
Austria[note 1] 1986 FFG 51.2 1.0% 5.37
Belgium[note 2] 1978 BELSPO 210.0 4.3% 17.82
Czech Republic[note 3] 2008 Ministry of Transport 44.7 0.9% 3.06
Denmark[note 2] 1977 DTU Space 33.8 0.7% 5.47
Estonia[note 3] 2015 ESO 3.7 0.1% 1.97
Finland[note 3] 1995 TEM 27.4 0.6% 3.52
France[note 2] 1980 CNES 1,311.7 26.9% 14.30
Germany[note 2] 1977 DLR 981.7 20.1% 11.11
Greece[note 3] 2005 HSA 20.6 0.4% 0.98
Hungary[note 3] 2015 HSO 11.7 0.2% 0.63
Ireland[note 1] 1980 EI 24.8 0.5% 3.60
Italy[note 2] 1978 ASI 665.8 13.7% 7.77
Luxembourg[note 3] 2005 Luxinnovation 29.9 0.6% 44.19
Netherlands[note 2] 1979 NSO 100.3 2.1% 5.32
Norway[note 1] 1986 NSA 86.3 1.8% 12.09
Poland[note 3] 2012 POLSA 38.4 0.8% 0.91
Portugal[note 3] 2000 FCT 21.0 0.4% 1.77
Romania[note 3] 2011 ROSA 34.3 0.7% 2.18
Spain[note 2] 1979 INTA 249.5 5.1% 4.39
Sweden[note 2] 1976 SNSA 83.2 1.7% 7.15
Switzerland[note 2] 1976 SSO 167.0 3.4% 17.61
United Kingdom[note 2] 1978 UKSA 464.3 9.5% 5.05
Other 181.3 3.7% N/A
Non-full members
Canada[note 4] 1979[40] CSA 28.0 0.6% 0.53
Lithuania 2021
Latvia 2020[42] Through MoES
Slovenia 2016[43] SPACE-SI 3.2 0.1% 1.31
Members and associates total 4,870.0 72.9%
European Union[note 5] 2004[44] ESP 1,683.3 83.5% 2.56
EUMETSAT 54.3 3.0%
Other income 72.4 4.0% N/A
Other institutional partners total 1,810.0 27.1%
Grand total 6,680.0 100%
  1. 1.0 1.1 1.2 These nations are considered initial signatories, but since they were members of neither ESRO nor ELDO (the precursor organisations to ESA) the Convention could only enter into force when the last of the other 10 founders ratified it.
  2. 2.0 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 Founding members and initial signatories drafted the ESA charter which entered into force on 30 October 1980. These nations were also members of either ELDO or ESRO.[32]
  3. 3.0 3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 Acceded members became ESA member states upon signing an accession agreement.[33][34][35][36][37][38][39]
  4. Canada is a Cooperating State of ESA.[40][41]
  5. Framework Agreement establishing the legal basis for cooperation between ESA and the European Union came into force in May 2004.

Non-full member states


Since 2016, Slovenia has been an associated member of the ESA.[43]


Latvia became the second current associated member on 30 June 2020, when the Association Agreement was signed by ESA Director Jan Wörner and the Minister of Education and Science of Latvia, Ilga Šuplinska in Riga. The Saeima ratified it on July 27.[42] Previously associated members were Austria, Norway and Finland, all of which later joined ESA as full members.


In May 2021, Lithuania became the third current associated member.[45] As a consequence its citizens became eligible to apply to the 2022 ESA Astronaut group, applications for which were scheduled to close one week later. The deadline was therefore extended by three weeks to allow Lithuanians a fair chance to apply.[46]


Since 1 January 1979, Canada has had the special status of a Cooperating State within ESA. By virtue of this accord, the Canadian Space Agency takes part in ESA's deliberative bodies and decision-making and also in ESA's programmes and activities. Canadian firms can bid for and receive contracts to work on programmes. The accord has a provision ensuring a fair industrial return to Canada.[47] The most recent Cooperation Agreement was signed on 15 December 2010 with a term extending to 2020.[48][49] For 2014, Canada's annual assessed contribution to the ESA general budget was €6,059,449 (CAD$8,559,050).[50] For 2017, Canada has increased its annual contribution to €21,600,000 (CAD$30,000,000).[51]

Budget appropriation and allocation

European Space Agency 2016 budget by domain out of a total budget is 5250M€.

ESA is funded from annual contributions by national governments as well as from an annual contribution by the European Union (EU).[52]

The budget of ESA was €5.250 billion in 2016.[53] Every 3–4 years, ESA member states agree on a budget plan for several years at an ESA member states conference. This plan can be amended in future years, however provides the major guideline for ESA for several years. The 2016 budget allocations for major areas of ESA activity are shown in the chart on the right.[53]

Countries typically have their own space programmes that differ in how they operate organisationally and financially with ESA. For example, the French space agency CNES has a total budget of €2015 million, of which €755 million is paid as direct financial contribution to ESA.[54] Several space-related projects are joint projects between national space agencies and ESA (e.g. COROT). Also, ESA is not the only European governmental space organisation (for example European Union Satellite Centre).


After the decision of the ESA Council of 21/22 March 2001, the procedure for accession of the European states was detailed as described the document titled "The Plan for European Co-operating States (PECS)".[55] Nations that want to become a full member of ESA do so in 3 stages. First a Cooperation Agreement is signed between the country and ESA. In this stage, the country has very limited financial responsibilities. If a country wants to co-operate more fully with ESA, it signs a European Cooperating State (ECS) Agreement. The ECS Agreement makes companies based in the country eligible for participation in ESA procurements. The country can also participate in all ESA programmes, except for the Basic Technology Research Programme. While the financial contribution of the country concerned increases, it is still much lower than that of a full member state. The agreement is normally followed by a Plan For European Cooperating State (or PECS Charter). This is a 5-year programme of basic research and development activities aimed at improving the nation's space industry capacity. At the end of the 5-year period, the country can either begin negotiations to become a full member state or an associated state or sign a new PECS Charter.[56] Many countries, most of which joined the EU in both 2004 and 2007, have started to co-operate with ESA on various levels:

Applicant state EU membership Cooperation agreement ECS agreement PECS charter(s) National programme
Turkey No 15 July 2004[57] TUA
Ukraine No 25 January 2008[58] SSAU
Slovenia 2004 28 May 2008[59] 22 January 2010[60] 30 November 2010[61] through MoHEST
Latvia 2004 23 July 2009[62] 19 March 2013[63] 30 January 2015[64] through MoES
Cyprus 2004 27 August 2009[65] 6 July 2016[66] through MoCW
Slovakia 2004 28 April 2010[67] 16 February 2015[68] through MoE
Lithuania 2004 7 October 2010[69] 10 October 2014[70] LSA[71][72]
Israel No 30 January 2011[73] ISA
Malta 2004 20 February 2012[74] MCST[75]
Bulgaria 2007 8 April 2015[76] 4 February 2016[77] SRTI
Croatia 2013 19 February 2018[78] through MoSE

During the Ministerial Meeting in December 2014, ESA ministers approved a resolution calling for discussions to begin with Israel, Australia and South Africa on future association agreements. The ministers noted that "concrete cooperation is at an advanced stage" with these nations and that "prospects for mutual benefits are existing".[79]

A separate space exploration strategy resolution calls for further co-operation with the United States, Russia and China on "LEO exploration, including a continuation of ISS cooperation and the development of a robust plan for the coordinated use of space transportation vehicles and systems for exploration purposes, participation in robotic missions for the exploration of the Moon, the robotic exploration of Mars, leading to a broad Mars Sample Return mission in which Europe should be involved as a full partner, and human missions beyond LEO in the longer term."[79]

Relationship with the European Union

The political perspective of the European Union (EU) was to make ESA an agency of the EU by 2014,[80] however, this date was not met. The EU member states provide most of ESA's funding, and they are all either full ESA members or observers.

Launch vehicle fleet

ESA has a fleet of different launch vehicles in service with which it competes in all sectors of the launch market. ESA's fleet consists of three major rocket designs: Ariane 5, Soyuz-2 and Vega. Rocket launches are carried out by Arianespace, which has 23 shareholders representing the industry that manufactures the Ariane 5 as well as CNES, at ESA's Guiana Space Centre. Because many communication satellites have equatorial orbits, launches from French Guiana are able to take larger payloads into space than from spaceports at higher latitudes. In addition, equatorial launches give spacecraft an extra 'push' of nearly 500 m/s due to the higher rotational velocity of the Earth at the equator compared to near the Earth's poles where rotational velocity approaches zero.

Ariane 5

Main page: Engineering:Ariane 5
Ariane 5 ECA transported to the ELA-3 launch pad

The Ariane 5 rocket is ESA's primary launcher. It has been in service since 1997 and replaced Ariane 4. Two different variants are currently in use. The heaviest and most used version, the Ariane 5 ECA, delivers two communications satellites of up to 10 tonnes into GTO. It failed during its first test flight in 2002, but has since made 82 consecutive successful flights until a partial failure in January 2018. The other version, Ariane 5 ES, was used to launch the Automated Transfer Vehicle (ATV) to the International Space Station (ISS) and will be used to launch four Galileo navigational satellites at a time.[81][82]

In November 2012, ESA agreed to build an upgraded variant called Ariane 5 ME (Mid-life Evolution) which would increase payload capacity to 11.5 tonnes to GTO and feature a restartable second stage to allow more complex missions. Ariane 5 ME was scheduled to fly in 2018,[83] but the whole project was scrapped in favor of Ariane 6, planned to replace Ariane 5 in the 2020s.

ESA's Ariane 1, 2, 3 and 4 launchers (the last of which was ESA's long-time workhorse) have been retired.


Main page: Engineering:Soyuz at the Guiana Space Centre
Soyuz Launch Complex

Soyuz-2 (also called the Soyuz-ST or Soyuz-STK) is a Russian medium payload launcher (ca. 3 metric tons to GTO) which was brought into ESA service in October 2011.[84][85] ESA entered into a €340 million joint venture with the Russian Federal Space Agency over the use of the Soyuz launcher.[12] Under the agreement, the Russian agency manufactures Soyuz rocket parts for ESA, which are then shipped to French Guiana for assembly.

ESA benefits because it gains a medium payload launcher, complementing its fleet while saving on development costs. In addition, the Soyuz rocket—which has been the Russian's space launch workhorse for more than 50 years—is proven technology with a very good safety record. Russia benefits in that it gets access to the Kourou launch site. Due to its proximity to the equator, launching from Kourou rather than Baikonur nearly doubles Soyuz's payload to GTO (3.0 tonnes vs. 1.7 tonnes).

Soyuz first launched from Kourou on 21 October 2011, and successfully placed two Galileo satellites into orbit 23,222 kilometres above Earth.[84]


Vega rocket
Main page: Engineering:Vega (rocket)

Vega is ESA's carrier for small satellites. Developed by seven ESA members led by Italy, it is capable of carrying a payload with a mass of between 300 and 1500 kg to an altitude of 700 km, for low polar orbit. Its maiden launch from Kourou was on 13 February 2012.[86] Vega began full commercial exploitation in December 2015.[87]

The rocket has three solid propulsion stages and a liquid propulsion upper stage (the AVUM) for accurate orbital insertion and the ability to place multiple payloads into different orbits.[88][89]

A larger version of the Vega launcher, Vega-C is in development and the first flight is expected in June 2021. The new evolution of the rocket incorporates a larger first stage booster, the P120C replacing the P80, an upgraded Zefiro (rocket stage) second stage, and the AVUM+ upper stage. This new variant enables larger single payloads, dual payloads, return missions, and orbital transfer capabilities.[90]

Ariane launch vehicle development funding

Historically, the Ariane family rockets have been funded primarily "with money contributed by ESA governments seeking to participate in the program rather than through competitive industry bids. This [has meant that] governments commit multiyear funding to the development with the expectation of a roughly 90% return on investment in the form of industrial workshare." ESA is proposing changes to this scheme by moving to competitive bids for the development of the Ariane 6.[91]

Future rocket development

Future projects include the Prometheus reusable engine technology demonstrator, Phoebus; an upgraded second stage for Ariane 6 and Themis; a reusable first stage[92][93]

Human space flight


Ulf Merbold became the first ESA astronaut to fly into space.

At the time ESA was formed, its main goals did not encompass human space flight; rather it considered itself to be primarily a scientific research organisation for uncrewed space exploration in contrast to its American and Soviet counterparts. It is therefore not surprising that the first non-Soviet European in space was not an ESA astronaut on a European space craft; it was Czechoslovak Vladimír Remek who in 1978 became the first non-Soviet or American in space (the first man in space being Yuri Gagarin of the Soviet Union) – on a Soviet Soyuz spacecraft, followed by the Pole Mirosław Hermaszewski and East German Sigmund Jähn in the same year. This Soviet co-operation programme, known as Intercosmos, primarily involved the participation of Eastern bloc countries. In 1982, however, Jean-Loup Chrétien became the first non-Communist Bloc astronaut on a flight to the Soviet Salyut 7 space station.

Because Chrétien did not officially fly into space as an ESA astronaut, but rather as a member of the French CNES astronaut corps, the German Ulf Merbold is considered the first ESA astronaut to fly into space. He participated in the STS-9 Space Shuttle mission that included the first use of the European-built Spacelab in 1983. STS-9 marked the beginning of an extensive ESA/NASA joint partnership that included dozens of space flights of ESA astronauts in the following years. Some of these missions with Spacelab were fully funded and organisationally and scientifically controlled by ESA (such as two missions by Germany and one by Japan) with European astronauts as full crew members rather than guests on board. Beside paying for Spacelab flights and seats on the shuttles, ESA continued its human space flight co-operation with the Soviet Union and later Russia, including numerous visits to Mir.

During the latter half of the 1980s, European human space flights changed from being the exception to routine and therefore, in 1990, the European Astronaut Centre in Cologne, Germany was established. It selects and trains prospective astronauts and is responsible for the co-ordination with international partners, especially with regard to the International Space Station. As of 2006, the ESA astronaut corps officially included twelve members, including nationals from most large European countries except the United Kingdom.

In the summer of 2008, ESA started to recruit new astronauts so that final selection would be due in spring 2009. Almost 10,000 people registered as astronaut candidates before registration ended in June 2008. 8,413 fulfilled the initial application criteria. Of the applicants, 918 were chosen to take part in the first stage of psychological testing, which narrowed down the field to 192. After two-stage psychological tests and medical evaluation in early 2009, as well as formal interviews, six new members of the European Astronaut Corps were selected – five men and one woman.[94]

Astronaut names

The astronauts of the European Space Agency are:

  1. 1.0 1.1 1.2 1.3 1.4 have visited Mir
  2. 2.0 2.1 2.2 2.3 2.4 2.5 2.6 2009 selection
  3. 3.00 3.01 3.02 3.03 3.04 3.05 3.06 3.07 3.08 3.09 3.10 3.11 3.12 3.13 3.14 3.15 have visited the International Space Station
  4. 4.0 4.1 4.2 4.3 4.4 now retired

Crew vehicles

In the 1980s, France pressed for an independent European crew launch vehicle. Around 1978, it was decided to pursue a reusable spacecraft model and starting in November 1987 a project to create a mini-shuttle by the name of Hermes was introduced. The craft was comparable to early proposals for the Space Shuttle and consisted of a small reusable spaceship that would carry 3 to 5 astronauts and 3 to 4 metric tons of payload for scientific experiments. With a total maximum weight of 21 metric tons it would have been launched on the Ariane 5 rocket, which was being developed at that time. It was planned solely for use in low Earth orbit space flights. The planning and pre-development phase concluded in 1991; the production phase was never fully implemented because at that time the political landscape had changed significantly. With the fall of the Soviet Union ESA looked forward to co-operation with Russia to build a next-generation space vehicle. Thus the Hermes programme was cancelled in 1995 after about 3 billion dollars had been spent. The Columbus space station programme had a similar fate.

In the 21st century, ESA started new programmes in order to create its own crew vehicles, most notable among its various projects and proposals is Hopper, whose prototype by EADS, called Phoenix, has already been tested. While projects such as Hopper are neither concrete nor to be realised within the next decade, other possibilities for human spaceflight in co-operation with the Russian Space Agency have emerged. Following talks with the Russian Space Agency in 2004 and June 2005,[95] a co-operation between ESA and the Russian Space Agency was announced to jointly work on the Russian-designed Kliper, a reusable spacecraft that would be available for space travel beyond LEO (e.g. the moon or even Mars). It was speculated that Europe would finance part of it. A €50 million participation study for Kliper, which was expected to be approved in December 2005, was finally not approved by the ESA member states. The Russian state tender for the project was subsequently cancelled in 2006.

In June 2006, ESA member states granted 15 million to the Crew Space Transportation System (CSTS) study, a two-year study to design a spacecraft capable of going beyond Low-Earth orbit based on the current Soyuz design. This project was pursued with Roskosmos instead of the cancelled Kliper proposal. A decision on the actual implementation and construction of the CSTS spacecraft was contemplated for 2008. In mid-2009 EADS Astrium was awarded a €21 million study into designing a crew vehicle based on the European ATV which is believed to now be the basis of the Advanced Crew Transportation System design.[96]

In November 2012, ESA decided to join NASA's Orion programme. The ATV would form the basis of a propulsion unit for NASA's new crewed spacecraft. ESA may also seek to work with NASA on Orion's launch system as well in order to secure a seat on the spacecraft for its own astronauts.[97]

In September 2014, ESA signed an agreement with Sierra Nevada Corporation for co-operation in Dream Chaser project. Further studies on the Dream Chaser for European Utilization or DC4EU project were funded, including the feasibility of launching a Europeanised Dream Chaser onboard Ariane 5.[98][99]

Cooperation with other countries and organisations

ESA has signed co-operation agreements with the following states that currently neither plan to integrate as tightly with ESA institutions as Canada, nor envision future membership of ESA: Argentina,[100] Brazil,[101] China,[102] India[103] (for the Chandrayan mission), Russia[104] and Turkey .[105]

Additionally, ESA has joint projects with the European Union, NASA of the United States and is participating in the International Space Station together with the United States (NASA), Russia and Japan (JAXA).

European Union

  ESA and EU member states
  ESA-only members
  EU-only members

ESA is not an agency or body of the European Union (EU), and has non-EU countries (Norway, Switzerland, and the United Kingdom) as members. There are however ties between the two, with various agreements in place and being worked on, to define the legal status of ESA with regard to the EU.[106]

There are common goals between ESA and the EU. ESA has an EU liaison office in Brussels. On certain projects, the EU and ESA co-operate, such as the Galileo satellite navigation system. Space policy has since December 2009 been an area for voting in the European Council. Under the European Space Policy of 2007, the EU, ESA and its Member States committed themselves to increasing co-ordination of their activities and programmes and to organising their respective roles relating to space.[107]

The Lisbon Treaty of 2009 reinforces the case for space in Europe and strengthens the role of ESA as an R&D space agency. Article 189 of the Treaty gives the EU a mandate to elaborate a European space policy and take related measures, and provides that the EU should establish appropriate relations with ESA.

Former Italian astronaut Umberto Guidoni, during his tenure as a Member of the European Parliament from 2004 to 2009, stressed the importance of the European Union as a driving force for space exploration, "since other players are coming up such as India and China it is becoming ever more important that Europeans can have an independent access to space. We have to invest more into space research and technology in order to have an industry capable of competing with other international players."[108]

The first EU-ESA International Conference on Human Space Exploration took place in Prague on 22 and 23 October 2009.[109] A road map which would lead to a common vision and strategic planning in the area of space exploration was discussed. Ministers from all 29 EU and ESA members as well as members of parliament were in attendance.[110]

National space organisations of member states

  • The Centre National d'Études Spatiales (CNES) (National Centre for Space Study) is the French government space agency (administratively, a "public establishment of industrial and commercial character"). Its headquarters are in central Paris . CNES is the main participant on the Ariane project. Indeed, CNES designed and tested all Ariane family rockets (mainly from its centre in Évry near Paris )
  • The UK Space Agency is a partnership of the UK government departments which are active in space. Through the UK Space Agency, the partners provide delegates to represent the UK on the various ESA governing bodies. Each partner funds its own programme.
  • The Italian Space Agency (Agenzia Spaziale Italiana or ASI) was founded in 1988 to promote, co-ordinate and conduct space activities in Italy. Operating under the Ministry of the Universities and of Scientific and Technological Research, the agency cooperates with numerous entities active in space technology and with the president of the Council of Ministers. Internationally, the ASI provides Italy's delegation to the Council of the European Space Agency and to its subordinate bodies.
  • The German Aerospace Center (DLR) (German: Deutsches Zentrum für Luft- und Raumfahrt e. V.) is the national research centre for aviation and space flight of the Federal Republic of Germany and of other member states in the Helmholtz Association. Its extensive research and development projects are included in national and international cooperative programmes. In addition to its research projects, the centre is the assigned space agency of Germany bestowing headquarters of German space flight activities and its associates.
  • The Instituto Nacional de Técnica Aeroespacial (INTA) (National Institute for Aerospace Technique) is a Public Research Organisation specialised in aerospace research and technology development in Spain. Among other functions, it serves as a platform for space research and acts as a significant testing facility for the aeronautic and space sector in the country.


ESA has a long history of collaboration with NASA. Since ESA's astronaut corps was formed, the Space Shuttle has been the primary launch vehicle used by ESA's astronauts to get into space through partnership programmes with NASA. In the 1980s and 1990s, the Spacelab programme was an ESA-NASA joint research programme that had ESA develop and manufacture orbital labs for the Space Shuttle for several flights on which ESA participate with astronauts in experiments.

In robotic science mission and exploration missions, NASA has been ESA's main partner. Cassini–Huygens was a joint NASA-ESA mission, along with the Infrared Space Observatory, INTEGRAL, SOHO, and others. Also, the Hubble Space Telescope is a joint project of NASA and ESA. Future ESA-NASA joint projects include the James Webb Space Telescope and the proposed Laser Interferometer Space Antenna. NASA has supported ESA's MarcoPolo-R mission which landed on asteroid Bennu in October 2020 and is scheduled to return a sample to Earth for further analysis in 2023.[111] NASA and ESA will also likely join together for a Mars sample-return mission.[112] In October 2020, the ESA entered into a memorandum of understanding (MOU) with NASA to work together on the Artemis program, which will provide an orbiting Lunar Gateway and also accomplish the first manned lunar landing in 50 years, whose team will include the first woman on the Moon. Astronaut selection announcements are expected within two years of the 2024 scheduled launch date.[113] ESA also purchases seats on the NASA operated Commercial Crew Program. The first ESA astronaut to be on a Commercial Crew Program mission is Thomas Pesquet. Pesquet launched into space aboard Crew Dragon Endeavour on the Crew-2 mission. ESA also has seats on Crew-3 with Matthias Maurer and Crew-4 with Samantha Cristoforetti.

Cooperation with other space agencies

Since China has started to invest more money into space activities, the Chinese Space Agency has sought international partnerships. ESA is, beside the Russian Space Agency, one of its most important partners. Two space agencies cooperated in the development of the Double Star Mission.[114] In 2017, ESA sent two astronauts to China for two weeks sea survival training with Chinese astronauts in Yantai, Shandong.[115]

ESA entered into a major joint venture with Russia in the form of the CSTS, the preparation of French Guiana spaceport for launches of Soyuz-2 rockets and other projects. With India, ESA agreed to send instruments into space aboard the ISRO's Chandrayaan-1 in 2008.[116] ESA is also co-operating with Japan, the most notable current project in collaboration with JAXA is the BepiColombo mission to Mercury.

Speaking to reporters at an air show near Moscow in August 2011, ESA head Jean-Jacques Dordain said ESA and Russia's Roskosmos space agency would "carry out the first flight to Mars together."[117]

International Space Station

ISS module Columbus at Kennedy Space Center's Space Station Processing Facility

With regard to the International Space Station (ISS) ESA is not represented by all of its member states:[118] 11 of the 22 ESA member states currently participate in the project: Belgium, Denmark, France, Germany, Italy, Netherlands, Norway, Spain, Sweden, Switzerland and United Kingdom. Austria, Finland and Ireland chose not to participate, because of lack of interest or concerns about the expense of the project. Portugal, Luxembourg, Greece, the Czech Republic, Romania, Poland, Estonia and Hungary joined ESA after the agreement had been signed. ESA is taking part in the construction and operation of the ISS with contributions such as Columbus, a science laboratory module that was brought into orbit by NASA's STS-122 Space Shuttle mission and the Cupola observatory module that was completed in July 2005 by Alenia Spazio for ESA. The current estimates for the ISS are approaching €100 billion in total (development, construction and 10 years of maintaining the station) of which ESA has committed to paying €8 billion.[119] About 90% of the costs of ESA's ISS share will be contributed by Germany (41%), France (28%) and Italy (20%). German ESA astronaut Thomas Reiter was the first long-term ISS crew member.

ESA has developed the Automated Transfer Vehicle for ISS resupply. Each ATV has a cargo capacity of 7,667 kilograms (16,903 lb).[120] The first ATV, Jules Verne, was launched on 9 March 2008 and on 3 April 2008 successfully docked with the ISS. This manoeuvre, considered a major technical feat, involved using automated systems to allow the ATV to track the ISS, moving at 27,000 km/h, and attach itself with an accuracy of 2 cm. Five vehicles were launched before the program ended with the launch of the fifth ATV, Georges Lemaître, in 2014.[121]

As of 2020, the spacecraft establishing supply links to the ISS are the Russian Progress and Soyuz, Japanese Kounotori (HTV), and the USA vehicles Cargo Dragon 2 and Cygnus stemmed from the Commercial Resupply Services program.

European Life and Physical Sciences research on board the International Space Station (ISS) is mainly based on the European Programme for Life and Physical Sciences in Space programme that was initiated in 2001.


According to Annex 1, Resolution No. 8 of the ESA Convention and Council Rules of Procedure,[4] English, French and German may be used in all meetings of the Agency, with interpretation provided into these three languages. All official documents are available in English and French with all documents concerning the ESA Council being available in German as well.


ESA Mission Control at ESOC in Darmstadt, Germany

ESA and the EU institutions

The Flag of Europe is flown in space during missions (for example it was flown by ESA's Andre Kuipers during Delta mission).

The Commission is increasingly working together towards common objectives. Some 20 per cent of the funds managed by ESA now originate from the supranational budget of the European Union. In recent years the ties between ESA and the European institutions have been reinforced by the increasing role that space plays in supporting Europe's social, political and economic policies.

The legal basis for the EU/ESA co-operation is provided by a Framework Agreement which entered into force in May 2004. According to this agreement, the European Commission and ESA co-ordinate their actions through the Joint Secretariat, a small team of EC's administrators and ESA executive. The Member States of the two organisations meet at ministerial level in the Space Council, which is a concomitant meeting of the EU and ESA Councils, prepared by Member States representatives in the High-level Space Policy Group (HSPG).

ESA maintains a liaison office in Brussels to facilitate relations with the European institutions.

Guaranteeing European access to space

In May 2007, the 29 European countries expressed their support for the European Space Policy in a resolution of the Space Council, unifying the approach of ESA with those of the European Union and their member states.

Prepared jointly by the European Commission and ESA's Director General, the European Space Policy sets out a basic vision and strategy for the space sector and addresses issues such as security and defence, access to space and exploration.

Through this resolution, the EU, ESA and their Member States all commit to increasing co-ordination of their activities and programmes and their respective roles relating to space.[124]


On 3 August 1984, ESA's Paris headquarters were severely damaged and six people were hurt when a bomb exploded, planted by the far-left armed Action Directe group.[125]

On 14 December 2015, hackers from Anonymous breached ESA's subdomains and leaked thousands of login credentials.[126]

See also

European Union matters

  • Agencies of the European Union
  • Directorate-General for Defence Industry and Space
  • Enhanced co-operation
  • European Union Agency for the Space Programme


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Further reading

  • ESA Bulletin ([1]) is a quarterly magazine about the work of ESA that can be subscribed to [2] free of charge.
  • Bonnet, Roger; Manno, Vittorio (1994). International Cooperation in Space: The Example of the European Space Agency (Frontiers of Space). Harvard University Press. ISBN:0-674-45835-4.
  • Johnson, Nicholas (1993). Space technologies and space science activities of member states of the European Space Agency. OCLC 29768749 .
  • Peeters, Walter (2000). Space Marketing: A European Perspective (Space Technology Library). ISBN:0-7923-6744-8.
  • Zabusky, Stacia (1995 and 2001). Launching Europe: An Ethnography of European Cooperation in Space Science. ISBN B00005OBX2.
  • Harvey, Brian (2003). Europe's Space Programme: To Ariane and Beyond. ISBN:1-85233-722-2.

External links