OTD…April 6 and STS-41C

#OTD…The first launch of Challenger in 1983 and Columbia’s shortened Spacelab mission in 1997

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

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.