It's been 40 years since the space shuttle Challenger exploded shortly after liftoff Jan. 28, 1986, in Florida, killing all ...

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

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

It’s been 40 years since the Space Shuttle Challenger disaster. It was a day the nation slowly realized something had ...

NASA held its annual Day of Remembrance on Thursday to honor those who lost their lives in the pursuit of space exploration.

— -- By age 33, Barbara Morgan had taught school on an Indian reservation in the Rockies and in Ecuador's capital in the Andes. That did not quiet her longing for a classroom higher in the sky.

Christa McAuliffe was to be the first civilian in space, but on January 28, 1986, Space Shuttle Challenger exploded, killing everyone aboard. In memory of the first Teacher-In Space, here are some ...

From the world watching in horror as the Challenger space shuttle exploded to the Chernobyl nuclear disaster that upended millions of lives, 1986 was a year for the history books. But it wasn’t all ...

Christa McAuliffe was to be the first civilian in space, but on January 28, 1986, Space Shuttle Challenger exploded, killing everyone aboard. In memory of the first Teacher-In Space, here are some ...

John Denver was a decorated country musician, philanthropist, environmentalist, and, generally, an icon. The man wore a few different hats. And one more to include on that list is that of a pilot’s ...