OTD…Sept. 8 and STS-106

#OTD in 2006…A star-spangled start to Discovery’s STS-121 mission

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

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.