heart murmur a sound additional to the normal heart sounds, heard on auscultation of the heart. Many murmurs are of no significance (innocent, physiological murmurs), particularly in young children, or due to increased blood flow through the heart during exercise, or in pregnancy.
Columbia Space Shuttle Disaster. On February 1, 2003, the space shuttle Columbia was returning from its 28th mission when, 16 minutes to touchdown, the shuttle incinerated and broke apart over Texas. Communication between the Columbia crew and Mission Control captures the last moments of the flight.
Here's a look at the Space Shuttle Columbia. On February 1, 2003, the Columbia breaks up upon re-entry during mission STS-107, killing all seven crew members.It was the second loss of a shuttle in 113 shuttle flights.Facts: Space Shuttle Columbia, the first re-useable spacecraft, was the oldest in the shuttle fleet.It completed 27 missions; STS 107 was its 28th mission.pace Shuttle Columbia, the first re-useable spacecraft, was the oldest in the shuttle fleet. It completed 27 missions; STS 107 was its 28th mission.