People in Concord, New Hampshire, today are remembering Christa McAuliffe. She's the young teacher who lost her life in the Challenger space shuttle disaster 19 years ago today. McAuliffe had been picked to be the first teacher in space. The Challenger blew up 73 seconds after launch, killing all seven crewmembers. McAuliffe's parents were in the crowd watching at the Kennedy Space Center. Her horrified students were watching on television. The Christa McAuliffe planetarium in Concord will hold a memorial program this evening, remembering the lives of the Challenger's crew. NASA held a Day of Remembrance yesterday in honor of the 17 astronauts who've lost their lives in America's three space disasters.