OTD…April 19 and STS-100

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

#OTD in 1997…Cassini was launched on its billion-mile trek to Saturn

Dave Scott, Jim Irwin and Al Worden left for the Moon today in 1971 aboard Apollo 15 bound for Hadley rille with the first Lunar Roving Vehicle.