A large piece from the 1986 Challenger explosion has been found at the bottom of the Atlantic ocean.
- NASA announced Thursday that a roughly 15x15-foot piece of the space shuttle's belly was found by divers earlier this year.
- Its discovery will be covered in a History Channel documentary later this month.
- NASA is reaching out to families of the seven Challenger crew members before deciding on its next move.
- On January 28th, 1986, the space shuttle Challenger exploded shortly after takeoff, killing seven crew members including schoolteacher Christine McAuliffe.