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

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

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

Scientists may have discovered a dwarf planet far beyond Neptune — an unearthing that may disprove a longstanding theory ...

There's a new interstellar object moving through our solar system and it's called 3I/ATLAS, according to NASA.

An object dubbed 3I/ATLAS is only the third interloper from outside the Solar System seen in all of human history.

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

The object gained an official name, C/2025 N1 or 3I/ATLAS, on Wednesday. Moving at a record-setting speed for an interstellar ...

An object from another star has been seen entering the solar system at high speed, and is expected to whip around the sun in ...

Update: July 3, 09:24 a.m. ET: On Wednesday, July 2, the International Astronomical Union’s Minor Planet Center confirmed that an interstellar object is traveling through our solar system.

For the dwarf planet candidate, one trip around the sun takes over 24,000 years. Its orbit challenges a proposed path for a hypothetical Planet Nine.

All eyes are on Comet 3I/ATLAS as astronomers worldwide chase the exotic ice ball through our solar system ...