OTD…April 12 and STS-1 and 51D

#OTD in 1993…Endeavour launched with the first Spacehab module and retrieval of the European EURECA satellite

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

#OTD in 2012…Kennedy Space Center bid final farewell to Endeavour