Here on Earth, people are gearing up for Halloween by carving pumpkins into jack-o-lanterns and preparing their costumes. Now, it looks like the sun has also decided to show off just in time for the scariest night of the year. NASA has captured a picture of the sun and its active regions-and it looks more than a little bit like a skull-like grin on a jack-o-lantern.
On Oct. 8, 2014, NASA's Solar Dynamics Observatory (SDO) captured a picture of the active regions of our nearest star. These active regions appear bright since they emit more light and energy, which are markers of an intense and complex set of magnetic fields hovering in the sun's atmosphere, the co...
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