Friday, September 8, 2017

Old Sunspot Returns - UNIVERSE


The large sunspot (called AR2665) that rotated out of view about two weeks ago has returned (Aug. 1-2, 2017). Though much reduced in size, it did blast a good-sized coronal mass ejection about a week ago on the far side of the sun. Sunspots can last from days to months, so for it to return again is not an unusual event.

Source:
https://sdo.gsfc.nasa.gov/gallery/main/item/825
Credit: Solar Dynamics Observatory, NASA.

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