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Huge Sunspots

Huge Sunspots

Sunspots 1579 and 1582 are so large that observers have been able to see them without the use of a solar telescope. While the sunspots are each as wide as the Earth, they are not particularly active, and pose only a small risk of damaging flares. Photo by Lauri Kangas of Ontario. More at Spaceweather.com.

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