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Rare interstellar comet 3I/ATLAS coming closest to Earth

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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 know. Comet 3I/ATLAS will approach within 168 million miles (270 million kilometers) of Earth when it makes its close flyby on Dec. 19.

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Comet 3I/ATLAS faces its next big 'alien' test near Jupiter

What's the latest on 3I/ATLAS? Interstellar comet may be visible in Florida

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3I/ATLAS Shock: ESA XMM-Newton Telescope Detects Mysterious X-Ray Glow From Alien Comet

ESA's advanced XMM-Newton telescope discovered a faint X-ray glow from the 3I/ATLAS comet. What is this mysterious light it ...

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Scientists detect X-ray glow from interstellar comet 3I/ATLAS extending 250,000 miles into space

While NASA's James Webb Telescope and other instruments have already spotted abundant water vapor, carbon monoxide and carbon ...

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