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...

eventually chose HELOS, renamed Exosat, and the IMP-D, renamed ISEE-2, projects. The European X-ray Observatory Satellite (EXOSAT), originally named "HELOS"...

Trajectory Details (Exosat)". NASA. Archived from the original on 2016-03-04. Retrieved 2008-02-27. "NASA – NSSDC – Spacecraft – Details (Exosat)". NASA. Archived...

EnVision (2031) Astronomy and cosmology Cos-B (1975–1982) IUE (1978–1996) EXOSAT (1983–1986) Hipparcos (1989–1993) Hubble Space Telescope (1990–present)...

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 is operated...

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...

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...

in 1984–85 Lewin made guest observations with the European observatory EXOSAT in collaboration with colleagues from Amsterdam and Garching, Germany. This...

telescopes such as Chandra X-ray Observatory, XMM-Newton, ROSAT, ASCA, EXOSAT, Suzaku, RHESSI and future missions like IXO [1] and Astro-H [2]. Bremsstrahlung...

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...