OTD…April 28 and STS-39

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 1985…Discovery launched on the first classified space shuttle mission for the Department of Defense. Watch the liftoff:

As a dress rehearsal mission for the moon landing, Apollo 10 launched today in 1969 with Cernan, Young and Stafford