Astronomers pointed two of the world’s most sensitive radio telescopes at 3I/ATLAS, the third confirmed interstellar object ...

A comet born around a distant star is now tearing through our solar system at roughly 150,000 miles per hour, and astronomers have only a few months to study it before it disappears forever.

Astronomers have discovered what they think may be an interstellar object passing through the solar system. At twice as wide as Mount Everest is tall, A11pl3Z (now called 3I/ATLAS and C/2025 N1) would ...

A team of researchers has presented the wild theory that an interstellar object might be hostile "alien technology" that could reach Earth in fall 2025. According to Live Science, the paper is ...

A mystery interstellar object discovered last week is likely to be the oldest comet ever seen—possibly predating our solar system by more than 3 billion years, researchers say. The "water ice-rich" ...

3I/ATLAS is only the third known object from beyond our solar system ever seen in our cosmic neighbourhood and the first to reach us from a completely different region of our Milky Way galaxy. (Image ...

A newly discovered comet, 3I/ATLAS, may be the most ancient visitor ever detected, potentially older than our solar system itself. Unlike previous interstellar objects, this ice-rich comet seems to ...

Comet 3I/ATLAS arrived from beyond the Solar System carrying a chemical story unlike anything astronomers had measured before. In the gas around it, they found isotope ratios that do not match the ...

We know of three interstellar objects (ISO) that have visited our inner solar system. Oumuamua was the first one, and it came and went in 2017. 2l/Borisov, an interstellar comet, was next, appearing ...

CAPE CANAVERAL, Fla. — NASA has discovered an interstellar comet that’s wandered into our backyard. The space agency spotted the quick-moving object with the Atlas telescope in Chile recently, and ...

CAPE CANAVERAL, Fla. (AP) — A comet from another star system will swing by Mars on Friday as a fleet of spacecraft trains its sights on the interstellar visitor. As UFOs go mainstream, the jury is out ...

There is a growing buzz in the astronomy community about a new object with a hyperbolic trajectory that is moving toward the inner Solar System. Early on Wednesday, the European Space Agency confirmed ...