OTD…June 21 and STS-57

#OTD in 1992…Columbia launches on the first Extended Duration Orbiter mission

#OTD in 1982…Columbia launches on the fourth space shuttle mission. #OTD in 1995…Atlantis launches on first shuttle-Mir docking flight

#OTD in 1995…Columbia launched on a microgravity science Spacelab flight