Tags: Artificialsatellite, Satellite.
The Small Astronomy Satellite 2 also known also as SAS-2 SAS B or Explorer 48 was a NASA gamma ray telescope. It was launched on 15 November 1972 into the low Earth orbit with a periapsis of 443 km and an apoapsis of 632 km. It completed its observations on 8 June 1973.SAS 2 was the second in the series of small spacecraft designed to extend the astronomical studies in the X-ray gamma-ray ultraviolet visible and infrared regions.
