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 ...

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

Astronomers are tracking a newly spotted comet hailing from parts unknown, only the third time such an interstellar object ...

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

A11pl3Z's eccentricity is now estimated to be near 6.0, the highest seen yet, confirming its hyperbolic orbit.

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

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

NASA has discovered 3I/ATLAS, only the third known interstellar object, now passing through our solar system from the ...

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