OTD…Sept. 20 and Endeavour retirement

NASA’s Kepler planet-finder began its mission to discover Earth-like worlds orbiting other stars in the galaxy today in 2009, successfully launching aboard a Delta 2 rocket from Cape Canaveral.

#OTD in 1999…Columbia launched with the first woman commander and the Chandra X-ray Observatory

#OTD in 1985…Atlantis launched on her maiden voyage as a new orbiter joined the shuttle fleet