The return of the large sunspot (called AR2673).  

거대 흑점의 귀환.

For the past two weeks, AR2673 has been transiting the backside of the sun, carried around by the sun's 27-day rotation.

Large size: 

Courtesy of NASA/SDO and the AIA, EVE, and HMI science teams.

Bum-Suk Yeom. 염범석.

Posted by starmaker 꿈꾸는 밤하늘

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