55 years ago today: America entered human spaceflight arena

Today in 1996…The launch of Columbia and the ill-fated Tethered Satellite System. Watch the liftoff:

#OTD…The first launch of Challenger in 1983 and Columbia’s shortened Spacelab mission in 1997

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.