OTD…July 29 and STS-51F

#OTD in 1993…Endeavour launched a new NASA Tracking and Data Relay Satellite.

VIDEO: The winged spaceship Columbia returned to Earth with a pinpoint landing at Edwards Air Force Base on this day 35 years ago, concluding the maiden flight of the space shuttle.

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