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Boo! Did we get you? This solar jack-o-lantern, captured by our Solar Dynamics Observatory…

Boo! Did we get you? This solar jack-o-lantern, captured by our Solar Dynamics Observatory…

nasa:

Bright orange active spots make the shape of two eyes and a grin, making the Sun look like a jack-o'-lantern. The rest of the Sun is dark in comparison, with an orange outline distinguishing the star from the darkness of space.

Credit: NASA/SDOALT

Boo! Did we get you? 🎃

This solar jack-o-lantern, captured by our Solar Dynamics Observatory (SDO) in October 2014, gets its ghoulish grin from active regions on the Sun, which emit more light and energy than the surrounding dark areas. Active regions are markers of an intense and complex set of magnetic fields hovering in the sun’s atmosphere.

The SDO has kept an unblinking eye on the Sun since 2010, recording phenomena like solar flares and coronal loops. It measures the Sun’s interior, atmosphere, magnetic field, and energy output, helping us understand our nearest star.

Grab the high-resolution version here.

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