OTD…Oct. 13 and Endeavour

#OTD in 1995, Endeavour launched on the ASTRO-2 astronomy mission:

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

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