OTD…June 2 and STS-91

A mission to service the Hubble Space Telescope blasted off on this date in 2002.

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

Today marks the 40th anniversary — July 20, 1976 — of the first U.S. robotic landing on another planet by the Viking 1 spacecraft on Mars.