3I/ATLAS nears Earth this week
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Interstellar comet 3I/ATLAS, discovered in July, will approach Earth on December 19th. This rare visitor from another star system, unlike typical come
Comet Lemmon was discovered in January 2025 and made its closest approach to Earth in late October 2025. But by November 2025, when this image was taken, it had brightened to about the same apparent brightness as the planet Uranus, making it visible to the naked eye even from suburban skies.