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Watch comet/alien spacecraft 3I/ATLAS make its closest approach to Earth

I/ATLAS is definitely a comet, not an alien spacecraft, but it is only the third confirmed interstellar object detected in ...
Space.com

Latest Comet 3I/ATLAS news: Comet close approach today

The interstellar comet 3I/ATLAS made its closest approach to Earth today (Dec. 19, 2025). Here's the latest news you need to ...