OTD…Oct. 30 and STS-61A

#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 in 2001, Discovery launched on STS-102 to exchange crews aboard the International Space Station

#OTD in 1994, the launch of Columbia on the STS-62 microgravity research mission