Shuttle Challenger remembered at 40th anniversary of NASA disaster

NASA's space shuttle Challenger exploded and broke apart Jan. 28, 1986, in the sky over East-Central Florida, killing the ...

It's been 40 years since 7 people were killed in the Challenger space shuttle explosion

It's been 40 years since the Challenger space shuttle, carrying seven people, took off from Florida's Kennedy Space Center, ...

Challenger at 40: Lessons from a tragedy

Forty years ago, the space shuttle Challenger exploded 73 seconds after liftoff. Seven astronauts were killed, including ...

Where were you when the Challenger exploded? Share your memories.

We're asking readers to share their memories on one of those "Where were you when ... " type of moments in American history.

A day of tragedy for the space shuttle over Florida. See original live coverage

See the stories, the video and the photos.