Friday, August 4, 2017

NASA's Solar Dynamics Observatory Watches a Sunspot

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.


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