28, 1986, when the Challenger space shuttle exploded shortly after takeoff ... Challenger exploded 73 seconds after takeoff because of a mechanical malfunction. The disaster occurred live on ...
McAuliffe was 37 when she was killed, one of the seven crew members aboard the Challenger when the space shuttle broke apart on live TV on Jan. 28, 1986.
New technology alerts schools when students type words related to suicide. Should all schools use it? Or is it an invasion of privacy? By Jeremy Engle See what you remember about this ...