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

There's a new interstellar comet in the neighborhood! Known as 3I/ATLAS, this comet poses no threat to Earth – but it does ...

It's only the third time that experts have spotted an object in the Milky Way that's come from a different solar system. Find ...

NASA has discovered a new interstellar comet that's currently located about 420 million miles away from Earth. The space ...

An interstellar object called 3I/ATLAS is now moving through our solar system, the third one we've seen in the last eight ...

Astronomers have discovered a rare instance of a interstellar comet speeding through the solar system. The 3I/ATLAS was first ...

NASA telescopes in Chile have discovered a comet from interstellar space, making its closest approach in October.

NASA has since confirmed the object is an interstellar comet called 3I/ATLAS – and it is only the third interstellar object ...

By Will Dunham WASHINGTON (Reuters) -Astronomers are tracking a newly spotted comet hailing from parts unknown, only the ...

Close stellar encounters could change the structure of our planetary system, potentially dooming Earth or other worlds to ...

Experts have confirmed that the mysterious object hurtling towards us, previously dubbed A11pl3Z, is an "interstellar object.

A comet has entered the Solar System from interstellar space and will pass through the inner planets later this year, NASA ...