OTD…Jan. 31 and Apollo 14

#OTD in 1994…Endeavour launched on the second Space Radar Laboratory mission

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

#OTD in 1994…Discovery launched to develop new techniques for monitoring Earth’s environment from space…and in 2006…Construction of the space station resumed as Atlantis delivered a power-generating truss