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.
The unmanned rocket that was to resupply the International Space Station blew up after liftoff from Wallops Island, Va. Oct. 28, 2014 The Orbital Sciences Antares rocket rose a short distance from the launch pad and then exploded in a ball of orange flame at the NASA Wallops Flight Facility in Wallops Island, Va.