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.
On 1 February 2003, the US space shuttle Columbia broke up soon after re-entering the Earth's atmosphere, killing all seven crew on board. On 1 February 2003, the US space shuttle Columbia broke up soon after re-entering the Earth's atmosphere, killing all seven crew on board. The space agency Nasa lost contact with the craft about 15 minutes before it was due to land at the Kennedy Space Center in Florida.