NASA is now combining spacecraft chemistry readings with stellar catalog data to trace interstellar comet 3I/ATLAS back to ...

NASA reports star-sized jet on 3I/ATLAS; Harvard says it exploded ...

Juice observed 3I/ATLAS during perihelion, when Earth-based telescopes could not. Spectroscopic observations measured water ...

NASA's James Webb Space Telescope is finding clues that are leading scientists toward the origins of the interstellar comet ...

Astronomers first spotted Comet 3I/ATLAS in June 2025, and it was later confirmed as an interstellar visitor that originated ...

An interstellar comet that blazed past the sun last year could be nearly three times older than our solar system and is ...

NASA's James Webb Space Telescope has made a breakthrough by detecting methane gas on the interstellar comet 3I/ATLAS for the first time. The discovery suggests the comet formed in a very different ...

NASA's James Webb Space Telescope has uncovered unusual chemistry in interstellar comet 3I/ATLAS, including the first direct detection of methane on a visitor from another star system. The comet also ...

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The NASA/ESA/CSA James Webb Space Telescope observed 3I/ATLAS on December 15-16 and again on December 27, 2025, when the comet was approximately 330 million and 380 million kilometers from the Sun, ...

Researchers say 3I/ATLAS could be 12 billion years old and has a composition unlike anything in our solar system.

The SETI Institute is the latest to confirm what scientists have long suspected: the interstellar 3I/ATLAS comet is not an ...