OTD…April 12 and STS-1 and 51D

#OTD in 1995…Discovery launched a Tracking and Data Relay satellite

#OTD in 1982 the 3rd launch of the space shuttle and in 1996 the 3rd Mir docking missioN

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