OTD…Sept. 30 and STS-68

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.

#OTD in 1985…Atlantis launched on her maiden voyage as a new orbiter joined the shuttle fleet

#OTD in 1983…Challenger launched with America’s first woman astronaut. Watch the launch: