Space
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Sun’s Paradox: Coldest Region Hides a Million-Degree Secret in Its Corona
Nearly 5,000 kilometers above the sun's surface lies a century-old question for solar physicists—how are temperatures in the star's upper atmosphere (corona) hundreds of times hotter than temperatures at the sun's visible surface?
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Earthshine: Earth Illuminates Moon with Ghostly Da Vinci Glow
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