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.
Challenger: The Science of a Space Shuttle Disaster. Jeffrey Kluger. Jan 28, 2016. There's a terrible power to the iconic pictures of the space shuttle Challenger exploding â the orange-white fireball in the Florida sky, with the twin contrails of the solid rocket boosters briefly continuing on their journey to nowhere.