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Smithsonian Magazine on MSN10d
A Newly Discovered and Brilliantly Green Comet Is Dazzling Astronomers. Here’s What to Know About the Glowing Celestial VisitorInitial observations suggest the comet, called C/2025 F2 (SWAN), will continue getting brighter as it approaches the sun.
Taken from different cameras and stitched together, the footage shows the horizon glowing as the sun sets ... lasts 14.5 Earth days. That's half the time it takes for the moon to orbit Earth.
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