OSO (Orbital Solar Observatory) satellite. Its purpose was to return data on the ultraviolet, X-ray and gamma ray emissions of the sun and galaxy. March 7, 1962 at 16:06 UTC · Launch Successful Thor Delta — United States Air Force, to Low Earth Orbit Space Launch Complex 17A, Cape Canaveral SFS, FL, USA The world's 150th orbital launch attempt, and 8th of 1962. Data: Launch Library 2, The Space Devs. Image by NOAA via The Space Devs.