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Cool Photo: A Black Spot, The Size Of Six Earths, Appears On The Sun

The bottom two black spots on the sun, known as sunspots, appeared quickly over the course of Feb. 19-20, 2013. (NASA/SDO/AIA/HMI/Goddard Space Flight Center)
The bottom two black spots on the sun, known as sunspots, appeared quickly over the course of Feb. 19-20, 2013. (NASA/SDO/AIA/HMI/Goddard Space Flight Center)

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