(NEXSTAR) – It may look all cute and cuddly, but the “smile” spotted in recent images of the sun triggered a geomagnetic storm watch over the weekend. An image from NASA’s Solar Dynamics Observatory ...
The photo, taken by SDO's Atmospheric Imaging Assembly, shows glowing eyes, a bright nose, and one wide, dark "mouth"-a coronal hole where magnetic fields open and allow solar wind to stream freely ...
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