| |
NASA announced that Explorer XII had successfully completed its first orbit, radioing data on magnetic fields and solar radiation from an of nearly 54,000 miles and within 170 miles of the Earth.
November 19, 1961 ...
The first gamma-ray telescope was carried into orbit on the Explorer XI satellite in 1961. Additional gamma-ray experiments flew on the OGO, Vela, and Russian Cosmos series of satellites.
 See also: Energy, Earth, Satellite, Focus, Astronomy
  
|
RSS
