Source - Space Weather News for Sept. 3, 2017:
http://spaceweather.comSUNSPOT
GENESIS: Two big sunspot groups are now facing Earth. Behemoth AR2674
has been growing for days, while newcomer AR2673 has suddenly
quadrupled in size, with multiple dark cores breaching the surface of
the sun in just the past 24 hours. The rapid development of these
regions could herald Earth-directed flares in the days ahead.
Visit
Spaceweather.com for movies of sunspot genesis in action.
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