News tagged with altitude

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Video: Sprites, gravity waves and airglow

Look! Fast! Sprite lightning occurs only at high altitudes above thunderstorms, only last for a thousandth of a second and emit light in the red portion of the visible spectrum, so they are really difficult ...

Sep 05, 2014 5 / 5 (2) 0

'Area 51' exists, but no UFOs: CIA paper

A newly declassified CIA document confirms the existence of famed Area 51 in Nevada, but conspiracy theorists will be disappointed the spy agency offers no proof of alien spaceship landings in the desert.

Aug 17, 2013 3.9 / 5 (16) 13