OTD…Jan. 24 and STS-51C

#OTD…Launch of Endeavour in 2001 to deliver Canadarm2 to the space station

#OTD in 1990…Columbia launched to retrieve NASA’s Long duration Exposure Facility (LDEF) on the longest Shuttle flight to date.

#OTD…Launch of Columbia in 1998 on the Neurolab Spacelab mission