"It could represent some of the oldest and most pristine water ever observed, formed in another planetary system and ...

The long-serving space telescope saw the third interloper to enter the solar system from beyond its limits late on Monday ...

The paper presented several anomalous characteristics of the object, which could indicate that it is not a comet at all but instead a directed craft.

A newly discovered object speeding through our solar system could be something far stranger than a comet, possibly even alien ...

A controversial new paper questions whether the interstellar object 3I/ATLAS is a potentially dangerous alien probe, similar ...

New photos, including a striking technicolor timelapse, show off the newly discovered interstellar object 3I/ATLAS as it ...

On July 1, astronomers spotted an unusual high-speed object zooming towards the sun. Dubbed 3I/ATLAS, the surprising space ...

Given 3I/ATLAS' highly eccentric orbit, this will be its one and only visit to our solar system, as its trajectory does not ...

Scientists are racing to learn as much as possible about the interstellar comet 3I/ATLAS before it fades from view forever ...

New Moon means dark skies — and your chance to try photographing interstellar interloper 3I/ATLAS moving against the background stars.

"The consequences, should the hypothesis turn out to be correct, could potentially be dire for humanity," said Avi Loeb.

The Gemini North telescope in Hawaii recently snapped a close-up of the comet that's captured the world’s attention.