OTD…Jan. 28 and STS-51L

Studying the atmosphere as part of NASA’s Mission to Planet Earth was the objective of shuttle Atlantis’ STS-45 mission in March 1992.

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

Today in 2011, shuttle Discovery made a graceful landing at Kennedy Space Center, returning from her final voyage after a remarkable three-decade life of service.