OTD…July 23 and STS-93

#OTD in 2008, the launch of Endeavour on STS-123.

#OTD…Launch of a 1993 environmental mission on Discovery and Atlantis’ ISS flight in 2002

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.