OTD…April 5 launches of STS-37 and 131

25 years ago this afternoon, Hubble was deployed from shuttle Discovery

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.

As a dress rehearsal mission for the moon landing, Apollo 10 launched today in 1969 with Cernan, Young and Stafford