Space Shuttle Challenger peering out from heavy mist as it makes its way to the launchpad ahead of its launch on 28 January 1986, at Kennedy Space Center, Florida, USA, in January 1986. The launch of STS-51-L ended in tragedy when the shuttle disintegrated over the Atlantic Ocean, off the coast of central Florida, resulting in the deaths of Michael J. Smith, Dick Scobee, Ronald McNair, Ellison Onizuka, Christa McAuliffe, Gregory Jarvis, and Judith Resnik. (Photo by Space Frontiers/Getty Images)