CAPE CANAVERAL, FLA. – Main engine exhaust, solid rocket booster plume and an expanding ball of gas from the external tank is visible seconds after the space shuttle Challenger accident on Jan. 28, 1986. (photo credit: NASA) Courtesty
FILE – This undated file photo provided by NASA shows New Hampshire teacher Christa McAuliffe. McAuliffe was aboard Space Shuttle Challenger on Jan. 28, 1986, when the vehicle exploded shortly after liftoff at the Kennedy Space Center. All seven members of the crew on board perished. (AP Photo/NASA, File) Anonymous
