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.
Space Shuttle Launches on Final Flight. Space shuttle Atlantis, delayed almost to the last second by a computer glitch, left the launch pad here at the Kennedy Space Center, punched a hole in the clouds, and disappeared into the history books. After 135 flights in 30 years, it was the last space shuttle launch ever. And it may be the last time America launches astronauts for many years. SEE MORE: 30 Years Of Space Shuttle Missions. At the Kennedy Space Center, throngs of people applauded, cheered--and in some cases wept.