A COMET AS BIG AS THE FULL MOON: Hyperactive comet 46P/Wirtanen is approaching Earth for one of the closest Earth-comet encounters of the Space Age. Observers report that the comet's gaseous green atmosphere now covers a patch of sky as large as the full Moon--and it is growing larger. Sky maps and expert observing tips are featured on today's edition of Spaceweather.com.
"AURORA PHOENIXES" FLY OVER NORWAY: Last month, a stream of solar wind hit Earth's magnetic field, sparking a memorable display of Phoenix-shaped auroras over Norway. The gaseous stream is about to return as the underlying coronal hole turns to face Earth once again. Estimated time of arrival: Dec. 8th or 9th. Visit Spaceweather.com for more information and updates.
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