Interstellar comet 3I/ATLAS has given astronomers an opportunity they rarely expect to receive. Unlike the countless icy ...

The Gaia mission has allowed researchers to understand the motions of stars like never before, even revealing possible ...

Juice observed 3I/ATLAS during perihelion, when Earth-based telescopes could not. Spectroscopic observations measured water ...

Astronomers first spotted Comet 3I/ATLAS in June 2025, and it was later confirmed as an interstellar visitor that originated ...

Strange interstellar comet speculated to be alien spacecraft is older than Solar System - Scientists say comet represents ...

NASA's James Webb Space Telescope found unusual isotopic signatures in interstellar comet 3I/ATLAS, suggesting it formed up ...

Exactly where the comet 3I/ATLAS came from within the Milky Way remains a mystery.

PARIS, France — An interstellar comet that blazed past the Sun last year could be nearly three times older than our Solar ...

One year ago, on July 1 2025, astronomers discovered a fascinating new object moving through the Solar System. Detected by ...

The findings surprised researchers, who used the comet's composition to better understand the environment in which it formed.

The water coming off comet 3I/ATLAS is not just unusual. It is extreme. Astronomers studying the interstellar comet found that its water is packed with an unusually heavy form of hydrogen called ...

The night sky occasionally offers a reminder that the Solar System is far from empty. Bright comets appear with glowing tails ...