The last of NASA's three High Energy Astronomy Observatories, HEAO 3 was launched 20 September 1979 on an Atlas-Centaur launch vehicle, into a nearly circular...

were denoted HEAO 1, HEAO 2 (also known as The Einstein Observatory), and HEAO 3, respectively. The large (~3000 kg) satellites were 3-axis stabilized...

(HEAO-2) was the first fully imaging X-ray telescope put into space and the second of NASA's three High Energy Astrophysical Observatories. Named HEAO...

Trajectory Details (HEAO 3)". NASA. Archived from the original on 2017-02-08. Retrieved 2008-02-27. "NASA – NSSDC – Spacecraft – Details (HEAO 3)". NASA. Archived...

Division. NASA. September 18, 2019. Retrieved 10 December 2023. HEAO-C, known as HEAO-3 after insertion into orbit, continued the program's mission of...

gamma emission from the Galactic Center. The observation was made by the HEAO-3 satellite in 1984. 26Al is mainly produced in supernovae ejecting many radioactive...

HEAO-1 was an X-ray telescope launched in 1977. HEAO-1 surveyed the sky in the X-ray portion of the electromagnetic spectrum (0.2 keV – 10 MeV), providing...

first fully imaging X-ray telescope High Energy Astronomy Observatory 3 (HEAO 3), launched September 1979, completed Imager for Magnetopause-to-Aurora...

Spectrometer Experiment) on CGRO, the C1 germanium (Ge) gamma-ray instrument on HEAO 3, and the Ge gamma-ray spectrometer (SPI) on the ESA INTEGRAL mission are...

Magnetic Spectrometer Cassini–Huygens Fermi Gamma-ray Space Telescope HEAO 1, HEAO 2, HEAO 3 Interstellar Boundary Explorer Langton Ultimate Cosmic-Ray Intensity...

(1997–2005) HEAO-1 (1977–1979) Herschel (2009–2013) Hinotori (Astro-A) (1981–1991) Hisaki (SPRINT-A) (2013–2023) HEAO-2 (Einstein Obs.) (1978–1982) HEAO-3 (1979–1981)...

area of greater than 300 cm2 at 1.5 keV." The probe weights 1450 kg and is 3-by-3.4 metres. Einstein Probe was launched on 9 January 2024, at 07:03 UTC by...

cryogenic germanium gamma-ray detectors. The HSRGS was launched aboard HEAO-3 in September 1979 and operated until the cryogenic fluid was exhausted in...

to isolate the very rare events being sought. Nuclear electronics HEAO 1 HEAO 3 INTEGRAL Uhuru (satellite) Gamma-ray spectroscopy Laurence E. Peterson...

flown: HEAO 1 in August 1977, HEAO 2 (also called the Einstein Observatory) in November 1978, and HEAO 3 in September 1979. Fred A. Speer was the HEAO project...

Energy Astronomy Observatory (HEAO 1) Einstein Observatory (HEAO 2) 3rd High Energy Astronomy Observatory (HEAO 3) HEAO Program Note that the correct...

Composition Explorer) Voyager 1 and Voyager 2 Cassini-Huygens HEAO 1, Einstein Observatory (HEAO2), HEAO 3 ISS-CREAM Balloon-borne BESS (Balloon-borne Experiment...

1 2 3 4 5 6 7 '62 '63 '64 '65 '66 '67 '68 '69 '70 '71 '72 '73 '74 '75 '76 '77 '78 '79 '80 '81 '82 '83   Success   Failure   Partial failure 1 2 3 4 5...

million years subsequent to the Big Bang. DARE’s tentative schedule involves a 3-year lunar orbit, focusing on data collection above the Moon’s far side—a...

VAFB, SLC-3W NOAA-6 (NOAA-A) Weather satellite SSO Success 20 September 1979 05:28 Atlas-Centaur SLV-3D AC-53 CCAFS, LC-36B HEAO-3 Astronomy LEO Success...

(6000 kg) 20 September 05:28 Atlas SLV 3D Cape Canaveral pad LC 36B HEAO 3(HEAO C) Low Earth (43.6 degrees inclination) unknown Successful Civilian payload...

dedicated X-ray astronomy satellites, such as Uhuru, Ariel 5, SAS-3, OSO-8 and HEAO-1, developed this field of science at an astounding pace. Scientists...

meantime, in 1978, NASA launched the first imaging X-ray telescope, Einstein (HEAO-2), into orbit. Work continued on the AXAF project throughout the 1980s and...

288..751S, doi:10.1086/162843 Giacconi, R.; et al. (1979), "The Einstein /HEAO 2/ X-ray Observatory", Astrophysical Journal, 230: 540–550, Bibcode:1979ApJ...

Virgo X-1 was the radio galaxy M87. Subsequent X-ray observations by the HEAO 1 and Einstein Observatory showed a complex source that included the active...

Lewin was co-principal investigator on High Energy Astronomy Observatory 1 HEAO-1 (A4), which has yielded the first all sky catalog at high-energy X rays...

NASA launched the first imaging X-ray telescope, Einstein Observatory (HEAO-2), into orbit. Work continued on the Chandra project through the 1980s and...

or documents of the National Aeronautics and Space Administration. "Ranger 3". www.jpl.nasa.gov. Retrieved 2018-10-14. This article incorporates public...

KS; Meekins JF; Yentis DJ; Smathers HW; McNutt DP; Bleach RD (1984). "The HEAO A-1 X-ray source catalog". Astrophysical Journal Supplement Series. 56 (12):...

2050+310, and 1M 2051+309, having been observed by the Einstein Observatory, HEAO 1, and OSO 7, respectively. The Cygnus Loop is a strong source of soft X-rays...