OTD…Sept. 21 and Endeavour retirement

#OTD in 1993…Endeavour launched with the first Spacehab module and retrieval of the European EURECA satellite

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 2000…Discovery launched on the 100th space shuttle mission