January 28, 1986 is a day that many of us can recall -- the day when seven astronauts lost their lives aboard the space shuttle Challenger.

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"Among those on board was New Hampshire high school teacher Christa McAuliffe, who had been chosen by NASA to be the first teacher in space. She was going to work on the crew as a payload specialist. The other six crew members were payload specialist Gregory Jarvis, mission specialist Judith A. Resnik, mission commander Francis R. (Dick) Scobee, mission specialist Ronald E. McNair, pilot Mike J. Smith and mission specialist Ellison S. Onizuka," reports ABC7 News.

The Challenger disaster was the first time NASA lost an astronaut in flight.

President Reagan addressed the country that evening, substituting this speech for the planned State of the Union address.