Skip to main content


#50YearsAgo today, the second NASA Small Astronomy Satellite (SAS-2) was launched. Dedicated to gamma-ray astronomy, it provided NASA with the first detailed look at the sky at gamma-ray wavelengths! @NASAUniverse #NASAhistory

Lo, thar be cookies on this site to keep track of your login. By clicking 'okay', you are CONSENTING to this.