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1st High Energy Astrophysics ObservatoryThe first of NASA's three High Energy Astronomy Observatories, HEAO 1 was launched aboard an Atlas Centaur rocket on 12 August 1977 and operated until 9 January 1979. During that time, it scanned the X-ray sky almost three times over 0.2 keV - 10 MeV, provided nearly constant monitoring of X-ray sources near the ecliptic poles, as well as more detailed studies of a number of objects through pointed observations. External Links1st High Energy Astrophysics Observatory (HEAO 1. GSFC. NASA ) on the internet The contents of this article are licensed from Wikipedia.org under the GNU Free Documentation License.
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