Astronomy Picture of the Day

Flare Well AR2673
Image Credit: NASA, SDO, GSFC

Explanation: Almost out of view from our fair planet, rotating around the Sun’s western edge giant active region AR2673 lashed out with another intense solar flare followed by a large coronal mass ejection on September 10. The flare itself is seen here at the right in an extreme ultraviolet image from the sun-staring Solar Dynamics Observatory. This intense flare was the fourth X-class flare from AR2673 this month. The active region’s most recent associated coronal mass ejection collided with Earth’s magnetosphere 2 days later. Say farewell to the mighty AR2673, for now. For the next two weeks, the powerful sunspot group will be on the Sun’s far side.

Tomorrow’s picture: 100 steps forward

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