Notable events that happened on this day in history.

1986: The NASA space shuttle Challenger explodes 73 seconds after liftoff, killing all seven crew members. Pictured from left: Challenger crew members Christa Mcauliffe, Gregory Jarvis, Judith Resnik, Francis Scobee, Ronald McNair, Mike Smith, and Ellison Onizuka pose for a photo on January 9, 1986.

NASA/Handout via Reuters