https://spaceweather.com
https://www.spaceweatheralerts.com
BIG SUNSPOT ALERT: A big, rapidly growing sunspot is turning to face Earth this weekend. AR2936 is one of the largest sunspots in years and it could soon pose a threat for strong Earth-directed flares. Observing tips and more information @ Spaceweather.com.
Solar Flare Alerts: Sign up for Space Weather Alerts and get instant text notifications when solar flares are underway.
Above: Sunspot AR2936 caught in mid-flare by amateur astronomer Francois Rouviere of Cannes, France.
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