OTD…June 18 and STS-7 and LRO

#OTD in 1994…Columbia launched on a Spacelab microgravity flight

#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

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