NASA space shuttle orbiter Challenger, riding on the 747/shuttle carrier aircraft, returns to Kennedy Space Center after landing at Edwards Air Force Base in California at the conclusion of its mission, April 1984

CREDIT: "NASA space shuttle orbiter Challenger, riding on the 747/shuttle carrier aircraft, returns to Kennedy Space Center after landing at Edwards AFB in California at the conclusion of its mission, April 1984." Photo courtesy of NASA for "Thrust into Space: How the Space Program Changed Brevard County," a Florida Local Legacy project