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A Rare Green Comet Will Be Visible for the First Time in 1,000 Years. How to Spot It Tonight

Comet C/2025 A6 (Lemmon) is rapidly approaching Earth, giving skywatchers an extremely rare opportunity to spot the sparkly comet Comet Lemmon (C/2025 A6) is making a rare appearance in Earth's skies, ...
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Rare interstellar comet 3I/ATLAS set to fly past Earth safely on December 19, scientists confirm

The interstellar comet 3I/ATLAS reaches its closest point to Earth on Dec. 19, allowing close study with no threat to the planet.