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New (never recorded or seen before) phenomena discovered

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Cubanjoe:
From A Thread:
NASA
Colliding Auroras Produce Explosions of Light
December 17, 2009: A network of cameras deployed around the Arctic in support of NASA's THEMIS mission has made a startling discovery about the Northern Lights. Sometimes, vast curtains of aurora borealis collide, producing spectacular outbursts of light. Movies of the phenomenon were unveiled at the Fall meeting of the American Geophysical Union today in San Francisco.

"Our jaws dropped when we saw the movies for the first time," says space scientist Larry Lyons of UCLA, a leading member of the team that made the discovery. "These outbursts are telling us something very fundamental about the nature of auroras."

click for an animated gif of the phenomena from NASA

http://science.nasa.gov/headlines/y2009/images/whenaurorascollide/asi_movie_29feb09_big.gif

It's interesting that these are so vast, no once has noticed them before.

The collisions occur on such a vast scale, isolated observers on Earth with limited fields of view had never noticed them before. It took a network of sensitive cameras spread across thousands of miles to get the big picture.
Thanks, Joe

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