An object older than the solar system is crossing familiar planetary territory, and spacecraft built for entirely different missions are turning into a makeshift deep-space observatory to study it.

The cliffside collapse created about 2,000 tonnes of rubble, 99 percent of which settled at the foot of the precipice. In 2015, Europe's Rosetta spacecraft witnessed -- and photographed -- a big one ...

“Observing 3I/ATLAS is like taking a fingerprint from another solar system,” explained Nathan Roth, an astronomer at American ...

Add Yahoo as a preferred source to see more of our stories on Google. 3I/ATLAS is only the third interstellar object detected in our solar system As comet 3I/ATLAS continues its exciting journey ...

Astrophysicists are scrambling to study an ancient comet from another star system that entered the solar system this year, and which has already swung past Mars. Dubbed 3I/ATLAS, the comet poses no ...

(KTLA) — NASA on Wednesday released new images and data of Comet 3I/ATLAS, the rare interstellar object that set off weeks of speculation — and a full-blown online debate — over whether it could be an ...

Scientists are scrambling to explain why interstellar visitor 3I/ATLAS is carrying life's chemical building blocks at concentrations never before seen, and it makes its final pass through our cosmic n ...

Astronomers have spotted something unusual in a comet passing through our Solar System. 3I/ATLAS, only the third confirmed interstellar visitor ever s.

NASA's Deep Space 1 spacecraft has provided scientists with a close-up look at the nucleus of comet Borrelly, the best look ever inside a comet's core of dust and gas, researchers and NASA officials ...

Comet C/2025 R2 (SWAN) was imaged in October as it crossed the galactic plane of the Milky Way. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works.

In 2005, NASA carried out one of the most unusual experiments ever attempted in space. A spacecraft called Deep Impact ...