OTD…Oct. 22 and STS-52

#OTD in 1996…Columbia launched on a life sciences and microgravity flight.

#OTD in 1990…Columbia launched to retrieve NASA’s Long duration Exposure Facility (LDEF) on the longest Shuttle flight to date.

#OTD in 2002…Atlantis launched the outward expansion of the space station’s truss backbone