OTD…June 25 and STS-50

#OTD in 1985…Challenger launched the first 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 1992…Atlantis launched to test the Tethered Satellite System