OTD…Jan. 24 and STS-51C

#OTD…Gamma Ray Observatory launched in 1991 on Atlantis and Discovery’s 2010 ISS flight

#OTD…Launch of Columbia in 1993 on the second flight of the German Spacelab

The flight of Gemini 4 launched today in 1965 for NASA’s first Extra Vehicular Activity spacewalk by Ed White on a four-day orbital mission with commander Jim McDivitt.