NASA's Solar Dynamics Observatory shows that over the course of just one day a tiny active region grew to became almost as large as its many-days-old neighbor (Aug. 23-24, 2018).

Over the course of just one day a tiny active region grew to became almost as large as its many-days-old neighbor (Aug. 23-24, 2018). Active regions, which are areas of intense magnetism, appear brighter in wavelengths of extreme ultraviolet light and are often the source of solar storms.

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SDO is managed by NASA's Goddard Space Flight Center, Greenbelt, Maryland, for NASA's Science Mission Directorate, Washington. Its Atmosphere Imaging Assembly was built by the Lockheed Martin Solar Astrophysics Laboratory (LMSAL), Palo Alto, California.

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