A massive comet trail may have caused climate upheaval on Earth more than 12,000 years ago, sparking the Younger Dryas.

NASA’s Hubble Space Telescope captured what the agency says is the "sharpest-ever" image of an interstellar comet speeding ...

New images from the Hubble telescope show an extrasolar entity as it hurtles through our solar system at speeds of more than ...

CAPE CANAVERAL, Fla. (AP) — The Hubble Space Telescope has captured the best picture yet of a high-speed comet visiting our ...

Of course, 3I/ATLAS is no ordinary comet. Discovered on July 1, 2025 by the Asteroid Terrestrial-impact Last Alert System ...

The Hubble Space Telescope has captured the best picture yet of a high-speed comet visiting our solar system from another ...

The latest observations of 3I/ATLAS suggest it resembles comets from the outer reaches of our solar system, but may be ...

Discovered last month by a telescope in Chile, the comet known as 3I-Atlas is only the third known interstellar object to pass our way.

Astronomers Discover 3I/ATLAS, Largest Interstellar Comet Yet Detected Astronomers have discovered 3I/ATLAS, the third known interstellar comet to pass through our solar system.

From the moment it entered our view, 3I/ATLAS—the third interstellar object ever detected in our solar system—instantly became the biggest news in astronomy for the month, if not the year.

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