LITTLE GREEN CANNONBALLS OF LIGHT: Researchers and citizen scientists have just discovered a new phenomenon: "Little green cannonballs of light" streaking through the atmosphere faster than 1000 mph during some geomagnetic storms. And they're not auroras. Visit today's edition of Spaceweather.com for the full story.
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Above: Pure green spheres of light streaking through the atmosphere, photographed by sky watchers in Canada, New Zealand, and the USA. [Full story]
