OTD…Sept. 20 and Endeavour retirement

Neil Armstrong, Buzz Aldrin and Michael Collins launched today in 1969 aboard Apollo 11 for one of the defining moments of the 20th century — man’s first landing on the moon.

NASA’s first space station — the Skylab orbital workshop — was launched atop a Saturn 5 rocket today, May 14, in 1973.

#OTD in 1989, Discovery launched a new Tracking and Data Relay Satellite