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 February 1, 2003, the space shuttle Columbia broke apart while re-entering the atmosphere over Texas, killing all seven crew members on board. The disaster occurred minutes before Columbia was scheduled to land at Floridaâs Kennedy Space Center.he Columbia disaster was the second major tragedy in the history of the space shuttle program after the space shuttle Challenger broke apart shortly after launch on January 28, 1986, and all seven astronauts on board perished. Advertisement.