OTD…Sept. 21 and Endeavour retirement

Mankind’s first landing on the Moon and stepping foot on the lunar surface occurred today in 1969 by Apollo 11 astronauts Neil Armstrong and Buzz Aldrin.

#OTD…Launch of Challenger in 1985 on a Spacelab research flight

#OTD in 1995, Endeavour launched on the ASTRO-2 astronomy mission: