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Space observatory
The European X-ray Observatory Satellite (EXOSAT), originally named HELOS, was an X-ray telescope operational from May 1983 until April 1986 and in that
EXOSAT
Trajectory Details (Exosat)". NASA. Archived from the original on 2016-03-04. Retrieved 2008-02-27. "NASA – NSSDC – Spacecraft – Details (Exosat)". NASA. Archived
List_of_space_telescopes
EU satellite telecoms constellation project
missions Science Astronomy and cosmology Cos-B (1975–1982) IUE (1978–1996) EXOSAT (1983–1986) Hipparcos (1989–1993) Hubble Space Telescope (1990–present)
IRIS²
Nearest star to the Solar System
Proxima Centauri. Further observations of flare activity were made with the EXOSAT and ROSAT satellites, and the X-ray emissions of smaller, solar-like flares
Proxima_Centauri
Globular cluster
X1732-304 was detected within the cluster with NASA’s Spacelab 2 and ESA’s EXOSAT missions. Terzan Catalogue "A home for old stars". Retrieved 15 December
Terzan_1
International organisation (1964-75); predecessor to the European Space Agency
eventually chose HELOS, renamed Exosat, and the IMP-D, renamed ISEE-2, projects. The European X-ray Observatory Satellite (EXOSAT), originally named "HELOS"
European Space Research Organisation
European_Space_Research_Organisation
European organisation dedicated to space exploration
missions Science Astronomy and cosmology Cos-B (1975–1982) IUE (1978–1996) EXOSAT (1983–1986) Hipparcos (1989–1993) Hubble Space Telescope (1990–present)
European_Space_Agency
American astronaut (born 1944)
scientist for the medium-energy x-ray experiment on the European Space Agency's EXOSAT satellite and played a leading role in the proposal and design studies for
Jeffrey_A._Hoffman
Telescope designed to observe remote objects by detecting X-rays
heavy X-ray space observatory with focusing X-ray optics, and European EXOSAT. The Chandra X-ray Observatory was launched by NASA in 1999 and has operated
X-ray_telescope
Proposed lunar LiDAR mapping mission
missions Science Astronomy and cosmology Cos-B (1975–1982) IUE (1978–1996) EXOSAT (1983–1986) Hipparcos (1989–1993) Hubble Space Telescope (1990–present)
Moonraker_(lunar_orbiter)
European satellite communication constellation project
missions Science Astronomy and cosmology Cos-B (1975–1982) IUE (1978–1996) EXOSAT (1983–1986) Hipparcos (1989–1993) Hubble Space Telescope (1990–present)
HydRON
Low mass X-ray binary in the constellation Volans
currently located 26,000 light years away. The discovery of EXO 0748-676, in EXOSAT data, was announced by Arvid N. Parmar et al. in 1985. The properties of
UY_Volantis
European lunar mapping mission
missions Science Astronomy and cosmology Cos-B (1975–1982) IUE (1978–1996) EXOSAT (1983–1986) Hipparcos (1989–1993) Hubble Space Telescope (1990–present)
Máni_(spacecraft)
European technology demonstration satellite launched in 2023
missions Science Astronomy and cosmology Cos-B (1975–1982) IUE (1978–1996) EXOSAT (1983–1986) Hipparcos (1989–1993) Hubble Space Telescope (1990–present)
JoeySat
missions that influenced ESIS at the time were the Hubble Space Telescope, EXOSAT and IUE, while Space Physics was mainly focused on the Cluster mission.
European Space Information System
European_Space_Information_System
Star in the constellation Andromeda
an F-type star. X-ray emissions were detected from this star during the EXOSAT mission. In Chinese, 天廄 (Tiān Jiù), meaning Celestial Stable, refers to
Rho_Andromedae
Italian astrophysicist (born 1954)
astronomy with the analysis of data collected by the Einstein Observatory and EXOSAT. In the following period, her interests widened to include all of multi-wavelength
Patrizia_Caraveo
Dutch astrophysicist (born 1936)
in 1984–85 Lewin made guest observations with the European observatory EXOSAT in collaboration with colleagues from Amsterdam and Garching, Germany. This
Walter_Lewin
Estonian nanosatellite
missions Science Astronomy and cosmology Cos-B (1975–1982) IUE (1978–1996) EXOSAT (1983–1986) Hipparcos (1989–1993) Hubble Space Telescope (1990–present)
ESTCube-1
Turkish astrophysicist (1940–2011)
1985 to January 1991. He started working on X-ray data of the Einstein and Exosat satellites. After the launch of the hugely successful ROSAT (Röntgensatellit
Hakkı_Ögelman
Aerospace company
Mission Launch Date EXOSAT 1983 GIOTTO 1985 HIPPARCOS 1989 ULYSSES
Telespazio_Germany
X-ray space observatory
dark matter. In 1982, even before the launch of XMM-Newton's predecessor EXOSAT in 1983, a proposal was generated for a "multi-mirror" X-ray telescope mission
XMM-Newton
Electromagnetic radiation due to deceleration of charged particles
telescopes such as Chandra X-ray Observatory, XMM-Newton, ROSAT, ASCA, EXOSAT, Suzaku, RHESSI and future missions like IXO and Astro-H. Bremsstrahlung
Bremsstrahlung
Planned European mission to demonstrate space debris removal
missions Science Astronomy and cosmology Cos-B (1975–1982) IUE (1978–1996) EXOSAT (1983–1986) Hipparcos (1989–1993) Hubble Space Telescope (1990–present)
ClearSpace-1
Quasar in the constellation Perseus
radio-selected blazar (RBL) based on European X-ray Observatory Satellite (EXOSAT) observations. However the object has no presence of either long-term or
NRAO_140
European Space Agency lunar lander
missions Science Astronomy and cosmology Cos-B (1975–1982) IUE (1978–1996) EXOSAT (1983–1986) Hipparcos (1989–1993) Hubble Space Telescope (1990–present)
Argonaut_(lunar_lander)
European spacecraft
missions Science Astronomy and cosmology Cos-B (1975–1982) IUE (1978–1996) EXOSAT (1983–1986) Hipparcos (1989–1993) Hubble Space Telescope (1990–present)
HENON
which discovered 300 sources. More recent X-ray satellites include: the EXOSAT (1983), ROSAT (1990), Chandra (1999), and Newton (1999). Gamma rays are
History_of_the_telescope
Broad-line radio galaxy located in the constellation Lyra
flux distribution flattened between the values of 2.20 and 10 μm. In 1985, EXOSAT observations detected another outburst in the galaxy where its medium and
3C_382
Planned ESA uncrewed spaceplane
missions Science Astronomy and cosmology Cos-B (1975–1982) IUE (1978–1996) EXOSAT (1983–1986) Hipparcos (1989–1993) Hubble Space Telescope (1990–present)
Space_Rider
Star in the constellation Cetus
of BU Cet. The star was detected as a source of soft X-ray emission by EXOSAT. It has 18% more mass than the Sun and is estimated to be about four billion
13_Ceti
Space launch vehicle development programme of the European Space Agency
missions Science Astronomy and cosmology Cos-B (1975–1982) IUE (1978–1996) EXOSAT (1983–1986) Hipparcos (1989–1993) Hubble Space Telescope (1990–present)
European_Launcher_Challenge
Earth observation satellite constellation
missions Science Astronomy and cosmology Cos-B (1975–1982) IUE (1978–1996) EXOSAT (1983–1986) Hipparcos (1989–1993) Hubble Space Telescope (1990–present)
HiVE
European Space Agency programme to develop a prototype reusable rocket first stage
missions Science Astronomy and cosmology Cos-B (1975–1982) IUE (1978–1996) EXOSAT (1983–1986) Hipparcos (1989–1993) Hubble Space Telescope (1990–present)
Themis_programme
Planned lunar exploration mission
missions Science Astronomy and cosmology Cos-B (1975–1982) IUE (1978–1996) EXOSAT (1983–1986) Hipparcos (1989–1993) Hubble Space Telescope (1990–present)
LUMIO_(space_mission)
European communication satellite for the Moon
missions Science Astronomy and cosmology Cos-B (1975–1982) IUE (1978–1996) EXOSAT (1983–1986) Hipparcos (1989–1993) Hubble Space Telescope (1990–present)
Lunar_Pathfinder
European satellite for maritime tracking
missions Science Astronomy and cosmology Cos-B (1975–1982) IUE (1978–1996) EXOSAT (1983–1986) Hipparcos (1989–1993) Hubble Space Telescope (1990–present)
ESAIL
Project by the European Space Agency
missions Science Astronomy and cosmology Cos-B (1975–1982) IUE (1978–1996) EXOSAT (1983–1986) Hipparcos (1989–1993) Hubble Space Telescope (1990–present)
Moonlight_Programme
European Space Agency observatory
missions Science Astronomy and cosmology Cos-B (1975–1982) IUE (1978–1996) EXOSAT (1983–1986) Hipparcos (1989–1993) Hubble Space Telescope (1990–present)
ESA_Optical_Ground_Station
European weather satellite
missions Science Astronomy and cosmology Cos-B (1975–1982) IUE (1978–1996) EXOSAT (1983–1986) Hipparcos (1989–1993) Hubble Space Telescope (1990–present)
MTG-I2
Temporary, reusable laboratory aboard the Space Shuttle
missions Science Astronomy and cosmology Cos-B (1975–1982) IUE (1978–1996) EXOSAT (1983–1986) Hipparcos (1989–1993) Hubble Space Telescope (1990–present)
Spacelab
Future mission to asteroid 99942 Apophis
missions Science Astronomy and cosmology Cos-B (1975–1982) IUE (1978–1996) EXOSAT (1983–1986) Hipparcos (1989–1993) Hubble Space Telescope (1990–present)
Ramses_(spacecraft)
satellites that were active from the 1980s to the early 2000s: the HEAO Program, EXOSAT, Ginga, RXTE, ROSAT, ASCA, as well as BeppoSAX, which detected the first
History_of_X-ray_astronomy
Proposed European infrared space telescope for detecting asteroids
missions Science Astronomy and cosmology Cos-B (1975–1982) IUE (1978–1996) EXOSAT (1983–1986) Hipparcos (1989–1993) Hubble Space Telescope (1990–present)
NEOMIR
British Earth observation satellite constellation
missions Science Astronomy and cosmology Cos-B (1975–1982) IUE (1978–1996) EXOSAT (1983–1986) Hipparcos (1989–1993) Hubble Space Telescope (1990–present)
VIREON
Galaxy in the constellation of Piscis Austrinus
doi:10.1086/190600. Turner, T. J.; Pounds, K. A. (1 October 1989). "The EXOSAT spectral survey of AGN". Monthly Notices of the Royal Astronomical Society
NGC_7172
Series of Italian technology demonstration small satellites
missions Science Astronomy and cosmology Cos-B (1975–1982) IUE (1978–1996) EXOSAT (1983–1986) Hipparcos (1989–1993) Hubble Space Telescope (1990–present)
AIX_(satellites)
Payload monitoring the first flight of the Ariane 6 rocket
missions Science Astronomy and cosmology Cos-B (1975–1982) IUE (1978–1996) EXOSAT (1983–1986) Hipparcos (1989–1993) Hubble Space Telescope (1990–present)
YPSat-1
Quasar in the constellation Capricornus
by Elvis et al. (1989). Through spectral analysis observation from the EXOSAT database, PKS 2126−158 is found to be flat spectrum source (α = 0.3+/-0
PKS_2126−158
Centre within the European Space Agency's Planetary Defense Office
missions Science Astronomy and cosmology Cos-B (1975–1982) IUE (1978–1996) EXOSAT (1983–1986) Hipparcos (1989–1993) Hubble Space Telescope (1990–present)
Near-Earth Object Coordination Centre
Near-Earth_Object_Coordination_Centre
European satellite mission
missions Science Astronomy and cosmology Cos-B (1975–1982) IUE (1978–1996) EXOSAT (1983–1986) Hipparcos (1989–1993) Hubble Space Telescope (1990–present)
NanoMagSat
European weather satellite
missions Science Astronomy and cosmology Cos-B (1975–1982) IUE (1978–1996) EXOSAT (1983–1986) Hipparcos (1989–1993) Hubble Space Telescope (1990–present)
MetOp-SG_B1
European mission to comets Halley and Grigg–Skjellerup (1985–1992)
in Giotto being assigned solo to an Ariane 1 which was available after EXOSAT was launched by a Thor-Delta. There were plans to have observation equipment
Giotto_(spacecraft)
Proposed European lunar rover
missions Science Astronomy and cosmology Cos-B (1975–1982) IUE (1978–1996) EXOSAT (1983–1986) Hipparcos (1989–1993) Hubble Space Telescope (1990–present)
MAGPIE_(rover)
European Space Agency programme for human spaceflight and robotic space exploration
missions Science Astronomy and cosmology Cos-B (1975–1982) IUE (1978–1996) EXOSAT (1983–1986) Hipparcos (1989–1993) Hubble Space Telescope (1990–present)
Terrae_Novae
Satellite constellation
missions Science Astronomy and cosmology Cos-B (1975–1982) IUE (1978–1996) EXOSAT (1983–1986) Hipparcos (1989–1993) Hubble Space Telescope (1990–present)
Celeste_(LEO-PNT)
European weather satellite constellation
missions Science Astronomy and cosmology Cos-B (1975–1982) IUE (1978–1996) EXOSAT (1983–1986) Hipparcos (1989–1993) Hubble Space Telescope (1990–present)
EPS-Sterna
NASA–ESA–SERC ultraviolet space observatory mission for general astronomy EXOSAT, launched May 1983, completed – ESA's first X-ray space observatory mission
List of European Space Agency programmes and missions
List_of_European_Space_Agency_programmes_and_missions
European space reentry experiment
missions Science Astronomy and cosmology Cos-B (1975–1982) IUE (1978–1996) EXOSAT (1983–1986) Hipparcos (1989–1993) Hubble Space Telescope (1990–present)
Draco_(space_mission)
European space mission for monitoring greenhouse gases
missions Science Astronomy and cosmology Cos-B (1975–1982) IUE (1978–1996) EXOSAT (1983–1986) Hipparcos (1989–1993) Hubble Space Telescope (1990–present)
Tango_(satellites)
Greek technology demonstration satellite
missions Science Astronomy and cosmology Cos-B (1975–1982) IUE (1978–1996) EXOSAT (1983–1986) Hipparcos (1989–1993) Hubble Space Telescope (1990–present)
OptiSat
European technology demonstration satellite
missions Science Astronomy and cosmology Cos-B (1975–1982) IUE (1978–1996) EXOSAT (1983–1986) Hipparcos (1989–1993) Hubble Space Telescope (1990–present)
MicroHETsat
Greek CubeSat mission
missions Science Astronomy and cosmology Cos-B (1975–1982) IUE (1978–1996) EXOSAT (1983–1986) Hipparcos (1989–1993) Hubble Space Telescope (1990–present)
Hellenic_Space_Dawn
Peacock was named in 2007 after Anthony Peacock, project scientist for the Exosat and XMM-Newton missions. Neri (HD 32518 b), an exoplanet, was named in 2019
Name_conflicts_in_astronomy
European CubeSat satellite mission
missions Science Astronomy and cosmology Cos-B (1975–1982) IUE (1978–1996) EXOSAT (1983–1986) Hipparcos (1989–1993) Hubble Space Telescope (1990–present)
PRETTY_(satellite)
European quantum communication satellite
missions Science Astronomy and cosmology Cos-B (1975–1982) IUE (1978–1996) EXOSAT (1983–1986) Hipparcos (1989–1993) Hubble Space Telescope (1990–present)
Eagle-1
Galaxy in the constellation Leo
hdl:2060/19820022328. S2CID 117087588. T. J. Turner; K. A. Pounds (1989). "The EXOSAT spectral survey of AGN". Monthly Notices of the Royal Astronomical Society
NGC_3227
Early-warning system for near-Earth objects
missions Science Astronomy and cosmology Cos-B (1975–1982) IUE (1978–1996) EXOSAT (1983–1986) Hipparcos (1989–1993) Hubble Space Telescope (1990–present)
Flyeye
USSR Venera 16 Venus Success Venera 16 orbiter Europe EXOSAT Earth Success Launch of the EXOSAT X-ray satellite Japan Tenma Earth Success Launch of the
Timeline of artificial satellites and space probes
Timeline_of_artificial_satellites_and_space_probes
European CubeSat for demonstrating space weather-related technologies
missions Science Astronomy and cosmology Cos-B (1975–1982) IUE (1978–1996) EXOSAT (1983–1986) Hipparcos (1989–1993) Hubble Space Telescope (1990–present)
RadCube
European technology demonstration CubeSat
missions Science Astronomy and cosmology Cos-B (1975–1982) IUE (1978–1996) EXOSAT (1983–1986) Hipparcos (1989–1993) Hubble Space Telescope (1990–present)
GOMX-4B
International space programme
missions Science Astronomy and cosmology Cos-B (1975–1982) IUE (1978–1996) EXOSAT (1983–1986) Hipparcos (1989–1993) Hubble Space Telescope (1990–present)
Euromir
Television channel
missions Science Astronomy and cosmology Cos-B (1975–1982) IUE (1978–1996) EXOSAT (1983–1986) Hipparcos (1989–1993) Hubble Space Telescope (1990–present)
ESA_Television
Spanish communications satellite program
missions Science Astronomy and cosmology Cos-B (1975–1982) IUE (1978–1996) EXOSAT (1983–1986) Hipparcos (1989–1993) Hubble Space Telescope (1990–present)
Spainsat_NG
Proposed European CubeSat mission to an asteroid
missions Science Astronomy and cosmology Cos-B (1975–1982) IUE (1978–1996) EXOSAT (1983–1986) Hipparcos (1989–1993) Hubble Space Telescope (1990–present)
Satis_(spacecraft)
European constellation of Earth observation satellites
missions Science Astronomy and cosmology Cos-B (1975–1982) IUE (1978–1996) EXOSAT (1983–1986) Hipparcos (1989–1993) Hubble Space Telescope (1990–present)
Atlantic_Constellation
Italian physicist
Directorate as a visiting scientist, working as a duty scientist at the EXOSAT Observatory, located at the European Space Operations Centre in Darmstadt
Paolo_Ferri
Italian Earth observation satellite system
missions Science Astronomy and cosmology Cos-B (1975–1982) IUE (1978–1996) EXOSAT (1983–1986) Hipparcos (1989–1993) Hubble Space Telescope (1990–present)
IRIDE
Science programme
was reduced to seven telescopes overall by 1987, though the success of EXOSAT inspired mission planners to improve the efficiency of the mission's observations
European Space Agency Science Programme
European_Space_Agency_Science_Programme
European climatology CubeSat satellite
missions Science Astronomy and cosmology Cos-B (1975–1982) IUE (1978–1996) EXOSAT (1983–1986) Hipparcos (1989–1993) Hubble Space Telescope (1990–present)
SIMBA_(satellite)
European Earth observation CubeSat
missions Science Astronomy and cosmology Cos-B (1975–1982) IUE (1978–1996) EXOSAT (1983–1986) Hipparcos (1989–1993) Hubble Space Telescope (1990–present)
MANTIS_(satellite)
Astronomical object emitting X-rays
first detected in an Einstein IPC observation and later identified in an Exosat channel multiplier array observation. "The broad-band spectrum of this DA
Astrophysical_X-ray_source
European Space Agency space mission
missions Science Astronomy and cosmology Cos-B (1975–1982) IUE (1978–1996) EXOSAT (1983–1986) Hipparcos (1989–1993) Hubble Space Telescope (1990–present)
Cluster_II_(spacecraft)
Czech technology demonstration satellite
missions Science Astronomy and cosmology Cos-B (1975–1982) IUE (1978–1996) EXOSAT (1983–1986) Hipparcos (1989–1993) Hubble Space Telescope (1990–present)
CIMER
X-ray imaging space telescope
CXBN-2 (2017–2019) DXS (1993) EPOCh (2008) EPOXI (2010) Explorer 11 (1961) EXOSAT (1983–1986) EUVE (1992–2001) FUSE (1999–2007) Gaia (2013–2025) GALEX (2003–2013)
Lobster Eye Imager for Astronomy
Lobster_Eye_Imager_for_Astronomy
Imaging satellite
missions Science Astronomy and cosmology Cos-B (1975–1982) IUE (1978–1996) EXOSAT (1983–1986) Hipparcos (1989–1993) Hubble Space Telescope (1990–present)
Intuition-1
Space cargo vehicle development programme of the European Space Agency
missions Science Astronomy and cosmology Cos-B (1975–1982) IUE (1978–1996) EXOSAT (1983–1986) Hipparcos (1989–1993) Hubble Space Telescope (1990–present)
LEO_Cargo_Return_Service
Family of European medium- and heavy-lift rocket launch vehicles
missions Science Astronomy and cosmology Cos-B (1975–1982) IUE (1978–1996) EXOSAT (1983–1986) Hipparcos (1989–1993) Hubble Space Telescope (1990–present)
Ariane_(rocket_family)
Variable star in the constellation of Canis Minor
accretion disk in orbit around the primary. X-ray observations with the EXOSAT observatory in 1984–1985 demonstrated there are two regions of emission
BG_Canis_Minoris
European technology demonstration satellite
missions Science Astronomy and cosmology Cos-B (1975–1982) IUE (1978–1996) EXOSAT (1983–1986) Hipparcos (1989–1993) Hubble Space Telescope (1990–present)
ΣYNDEO‑3
European CubeSat for atmospheric science
missions Science Astronomy and cosmology Cos-B (1975–1982) IUE (1978–1996) EXOSAT (1983–1986) Hipparcos (1989–1993) Hubble Space Telescope (1990–present)
PICASSO_(satellite)
X-ray space telescope
CXBN-2 (2017–2019) DXS (1993) EPOCh (2008) EPOXI (2010) Explorer 11 (1961) EXOSAT (1983–1986) EUVE (1992–2001) FUSE (1999–2007) Gaia (2013–2025) GALEX (2003–2013)
Einstein_Probe
Italian cubesat
missions Science Astronomy and cosmology Cos-B (1975–1982) IUE (1978–1996) EXOSAT (1983–1986) Hipparcos (1989–1993) Hubble Space Telescope (1990–present)
E-st@r-II
Proposed concept lunar orbiter
CXBN-2 (2017–2019) DXS (1993) EPOCh (2008) EPOXI (2010) Explorer 11 (1961) EXOSAT (1983–1986) EUVE (1992–2001) FUSE (1999–2007) Gaia (2013–2025) GALEX (2003–2013)
Dark_Ages_Radio_Explorer
Canceled Earth observation satellite
missions Science Astronomy and cosmology Cos-B (1975–1982) IUE (1978–1996) EXOSAT (1983–1986) Hipparcos (1989–1993) Hubble Space Telescope (1990–present)
Traceable Radiometry Underpinning Terrestrial and Helio Studies
Traceable_Radiometry_Underpinning_Terrestrial_and_Helio_Studies
Orbital recoverable launch vehicle of the European company ArianeGroup
missions Science Astronomy and cosmology Cos-B (1975–1982) IUE (1978–1996) EXOSAT (1983–1986) Hipparcos (1989–1993) Hubble Space Telescope (1990–present)
Ariane_Next
European technology demonstration CubeSat
missions Science Astronomy and cosmology Cos-B (1975–1982) IUE (1978–1996) EXOSAT (1983–1986) Hipparcos (1989–1993) Hubble Space Telescope (1990–present)
QARMAN
Dutch astronomer
of the X-ray emission) of compact stars while he was working with ESA's EXOSAT satellite to study the strongest X-ray sources near the centre of the Milky
Michiel_van_der_Klis
European technology demonstration CubeSat
missions Science Astronomy and cosmology Cos-B (1975–1982) IUE (1978–1996) EXOSAT (1983–1986) Hipparcos (1989–1993) Hubble Space Telescope (1990–present)
GENA-OT
European technology demonstration satellites
missions Science Astronomy and cosmology Cos-B (1975–1982) IUE (1978–1996) EXOSAT (1983–1986) Hipparcos (1989–1993) Hubble Space Telescope (1990–present)
PROBA_satellite_series
EXOSAT
EXOSAT
EXOSAT
EXOSAT
EXOSAT
EXOSAT
EXOSAT
EXOSAT
EXOSAT