The space shuttle Columbia broke apart and burned up
while reentering Earth’s atmosphere over Texas on February 1, 2003. The
entire seven-member crew was killed as they returned to Earth after
completing a series of scientific experiments. Initial investigations of the
disaster pointed to a problem with the shuttle’s left wing, which was struck
during liftoff by a piece of insulation from the external fuel tank. Such
falling debris is common during launches, however, and NASA engineers felt
the damaged wing posed no danger. The space shuttle fleet has been grounded
indefinitely while the investigation proceeds and until preventive measures
can be taken to insure that no similar accident can occur again. |