The Sun as of 20:00 UT on Nov. 3, 2011. AR 1339 is on the northwest limb. Credit SDO/GSFC

Largest Sunspot in Years Now on the Sun

Article Updated: 24 Dec , 2015
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One of the largest sunspots in years is now visible, rotating around into view on the Sun’s limb on November 3, 2011. And it’s a feisty one, too. The Solar Dynamics Observatory team called Active Region 1339 a “Bad Boy,” as at 20:27 UTC, a solar flare peaked at X1.9. X-class flares are massive, and can be major events that can trigger planet-wide radio blackouts and long-lasting radiation storms. This region is not facing Earth — yet. But we’ll be keeping on eye on it as it turns toward an Earth-facing direction.

See a full-Sun image from SDO below.

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This sunspot is huge, measuring some 40,000 km wide and at over 80,000 in length. Spaceweather.com said two or three of the sunspot’s dark cores are wider than Earth itself.

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1 Response

  1. serial_ tech says:

    I can has aurora in NC plz? 😀

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