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

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.

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

A mysterious new interstellar object, 3I/ATLAS, was discovered in July. It turns out that wasn't the first time our ...

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

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

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

The photos reveal a bright and well-developed coma, the cloud of gas and dust surrounding the comet's nucleus, with striking ...

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

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

The comet was discovered on July 1 by the ATLAS (Asteroid Terrestrial-impact Last Alert System) survey telescope. Knowing ...