The crew of Space Shuttle mission STS-51-L pose for their official portrait on November 15, 1985. In the back row from left to right: Ellison S. Onizuka, Sharon Christa McAuliffe, Greg Jarvis, and Judy Resnik. In the front row from left to right: Michael J. Smith, Dick Scobee, and Ron McNair. All were tragically lost on January 28, 1986 when Space Shuttle Challenger blew apart 73 seconds after liftoff.