The “supersun” of January 2, 2018.

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The “supersun” of January 2, 2018, photographed at noon EST with safe solar telescopes at the Phoebe Waterman Haas Public Observatory. Pictured is the lower atmosphere of the Sun, as seen with a calcium-K telescope. The Sun is approaching a period of low activity. It currently has no sunspots. Photo credit: National Air and Space Museum.

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2018

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Smithsonian's National Air and Space Museum

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Smithsonian Institution

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