OTD

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

#OTD…Launch of a 1994 Space Radar Lab mission on Endeavour

#OTD…Launch of a 1993 environmental mission on Discovery and Atlantis’ ISS flight in 2002

#OTD…Gamma Ray Observatory launched in 1991 on Atlantis and Discovery’s 2010 ISS flight

#OTD…The first launch of Challenger in 1983 and Columbia’s shortened Spacelab mission in 1997