OTD…April 25 and the Hubble deploy

#OTD in 1983…Challenger lifts off on the first nighttime shuttle launch…and Discovery launches on her inaugural Spaceflight

#OTD in 2012…Crowds cheer as Endeavour traverses though Los Angeles

#OTD…Launch of Discovery in 1990 with the Hubble Space Telescope, our window on the universe!