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Saturday, February 23, 2013

A Black Spot, The Size Of Six Earths, Appears On The Sun : The Two-Way : NPR

Cool Photo: A Black Spot, The Size Of Six Earths, Appears On The Sun : The Two-Way : NPR
The bottom two black spots on the sun, known as sunspots, appeared quickly over the course of Feb. 19-20, 2013.

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