OTD…June 5 and STS-40

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

The first crew to inhabit Skylab — Conrad, Weitz and Kerwin — launched today in 1973 for a 28-day mission that successfully made critical repairs, brought the station into operation and conducted solar astronomy, Earth resources and medical experiments.

#OTD in 2009…Endeavour launched to complete the Japanese segment of the International Space Station