The cosmos has a knack for upending our expectations just when we think we have the neighbourhood mapped out. On Jan. 14, 2026, the Hubble Space Telescope swivelled its gaze toward the interstellar ...

A rogue comet from another star system is rewriting the textbook on how cosmic visitors behave deep inside our solar system. Interstellar comet 3I/ATLAS, only the third object confirmed to have ...

The mystifying 3I/ATLAS interstellar comet is blazing toward Earth and will in a matter of days come as close to our planet as it ever will. The impending cosmic rendezvous – if you want to call it ...

Scientists confirmed that the interstellar comet 3I/ATLAS, which passed closest to Earth in December 2025, showed no detectable technosignatures strong enough to suggest it is an alien spacecraft.

The Post's complete guide to catching 3I/ATLAS as it makes its closest approach to Earth on December 19. Here’s how to keep your 3I on it. With 3I/ATLAS slated to make its Earth tour in two days, ...

The comet that rambled past us from another star last year likely originated in a cold, isolated corner of the galaxy that had yet to gel into its own solar system, astronomers reported Thursday.

The presence of deuterium, an isotope of hydrogen, in 3I/ATLAS suggests the interstellar comet formed in a much colder place before our solar system existed.

NASA’s Europa Clipper spacecraft has captured images of interstellar comet 3I/ATLAS as the object — perhaps the oldest ever seen by astronomers — whizzes through the inner solar system. On Nov. 6, ...

The mysterious interstellar comet 3I/ATLAS is making its closest approach to Earth on Friday, offering scientists a rare opportunity to study an object born around another star. Space agencies are ...