Two meteorites found in the Sahara in 2023 might be from Mercury, a study suggests, but doubts remain due to how little is ...

Just the third-ever confirmed interstellar object has been detected in our solar system. Here's what we know. (Spoiler: It's ...

Scientists now say an interstellar comet discovered earlier this month could be one of the oldest that astronomers have ever ...

The dream of traveling to distant stars and colonizing other worlds has captured human imagination for centuries. Yet when we confront the reality of cosmic distances, that dream feels both ...

I/ATLAS, earlier known as A11pI3Z, is only the third interstellar visitor to be discovered passing through our corner of the ...

A new interstellar object, A11pl3Z, has been discovered in our solar system, marking the third such object to be observed. It ...

Astronomers have observed an object that originated from beyond our solar system, thought to be an interstellar comet, ...

Rocky bodies called protoplanets were thought to have formed slightly earlier in the inner solar system than those beyond the ...

Officially named 3I/ATLAS, the comet was confirmed as having originated outside of Earth's solar system on July 3, according ...

Astronomers have been given the rare opportunity to study an extrasolar object after the recent discovery of the interstellar ...

Captured just days after its discovery, the images offer the clearest view yet of this rare visitor from beyond our solar system.

A newly discovered ice comet from deep space may be over 7 billion years old, making it the most ancient comet scientists ...