The NASA space shuttle Challenger exploded 40 years ago, on January 28, 1986, just 73 seconds after liftoff. The disaster claimed the lives of all seven astronauts aboard, including Christa McAuliffe, a teacher from New Hampshire who would have been the first civilian in space. “The crew of the space shuttle Challenger honored us by the manner in which they lived their lives,” President Regan said in an address to the nation that night. “We will never forget them, nor the last time we saw them,

On the 33rd anniversary of the Space Shuttle Challenger disaster, we remember the 7 crew members killed. We take a look back at Peter Jennings' reporting on the explosion on January 28, 1986. | Good Morning America

Where were you when you heard the space shuttle Challenger had exploded? The disaster, 40 years ago today, was a defining moment of the ‘80s. What do you remember about that day? Here’s a look back at what aired that night at our station in Tampa. | FOX 35 Orlando

On January 28th, 1986 the Space Shuttle Challenger exploded and broke apart on take off. This week, Destruction Decoded explores the top 10 most dramatic space accidents, from Baikonur to Cape Canaveral. Watch Destruction Decoded on Wednesdays at 8pm, on National Geographic UK. | National Geographic UK

January 28th, 1986 - Space Shuttle Challenger on the STS-51L mission exploded in-flight, 73 seconds after launch 7 Astronauts died: - Francis R. Scobee - Michael J. Smith - Ronald McNair - Ellison Onizuka - Judith Resnik - Gregory Jarvis - Christa McAuliffe | Talk of Titusville