Coronal hole, SDO image

Coronal hole, SDO image

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Credit: NASA/Solar Dynamics Observatory/SCIENCE PHOTO LIBRARY

Caption: Coronal hole. Extreme ultraviolet (UV) image of a coronal hole (dark blue region) in the Sun's atmosphere. In a coronal hole the Sun's magnetic field (white lines) opens up, which allows solar winds to escape. This cornoal hole is facing directly towards Earth and is sending high-speed solar winds in the planet's direction. This could cause polar geomagnetic storms that generate aurorae. Image obtained by NASA's Solar Dynamics Observatory on 12th October 2015.

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Keywords: 12 october 2015, 2000s, 2010s, 21st century, astronomical, astronomy, atmosphere, corona, coronal hole, extreme ultraviolet, extreme uv, magnetic field, sdo, solar dynamics observatory, solar system, solar wind, space, space weather, star, sun

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