NASA’s Solar Dynamics Observatory Watches a Sunspot
On July 5, 2017, NASA’s Solar Dynamics Observatory watched an active region — an area of intense and complex magnetic fields — rotate into view on the Sun. This image shows a blended view of the sunspot in visible and extreme ultraviolet light, revealing bright coils arcing over the active region — particles spiraling along magnetic field lines.
August 04, 2017
via NASA http://ift.tt/2v43I2x
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