OTD…April 26 and STS-55

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

#OTD in 2000…Atlantis launched on a mission to make the International Space Station a home in orbit

#OTD in 1999…Columbia launched with the first woman commander and the Chandra X-ray Observatory