OTD…Jan. 24 and STS-51C

#OTD in 2009…Discovery launches on her silver anniversary mission

A mission to service the Hubble Space Telescope blasted off on this date in 2002.

#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