OTD…Oct. 23 and STS-120

#OTD in 1985…Challenger suffered an engine shutdown on her way to orbit for a Spacelab mission

#OTD in 1995…Endeavour launched to deploy and retrieve solar satellite and Wake Shield Facility

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