On a single day last November, two spacecraft millions of kilometers apart turned their ultraviolet eyes toward the same ...

When an unknown object from the depths of interstellar space tumbles through our cosmic neighbourhood, it is bound to capture our imagination. Named 3I/ATLAS and officially designated C/2025 N1 (ATLAS ...

Physicist Brian Cox clearly stated that Comet 3I/ATLAS—an interstellar traveller older than the Sun—is a natural object containing ice, dust, and carbon dioxide, and has no extraterrestrial origin.

The unusual behaviour of interstellar comet 3I/ATLAS has reignited online debate, but astronomers say the gaps in public ...

When the interstellar object 3I/ATLAS entered the Solar System, astronomers quickly realized it was unlike anything they had seen before. Its age, trajectory, composition, and origin sparked intense ...

Those concerned that 3I/ATLAS' arrival to our solar system meant that some sort of alien invasion was imminent can breathe a sigh of relief. Echoing what NASA officials have long said, a team of ...

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James is a published author with multiple pop-history and science books to his name. He specializes in history, space, strange science, and anything out of the ordinary.View full profile James is a ...

Israeli-born Harvard astronomer Avi Loeb, no stranger to controversy, is once again drawing attention — and taking flak — for positing that an interstellar object might be a piece of extraterrestrial ...

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.