The Sun, Atmospheric Imaging Assembly, NASA’s Solar Dynamics Observatory. Image: NASA/SDO (AIA).

The Sun, Atmospheric Imaging Assembly, NASA's Solar Dynamics Observatory. Image: NASA/SDO (AIA).

The Sun, Atmospheric Imaging Assembly, NASA’s Solar Dynamics Observatory. Image: NASA/SDO (AIA).

The Sun, Atmospheric Imaging Assembly, NASA’s Solar Dynamics Observatory. Image: NASA/SDO (AIA).

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