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

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

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

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

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

Stars passing close to the sun could cause planets to collide, including with Earth, or even be ejected as rogue planets, new ...

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

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

Astronomers on Wednesday confirmed the discovery of an interstellar object racing through our Solar System – only the third ...

For only the third time in history, astronomers have detected a new interstellar visitor — an object from another star — blitzing into our solar system.

The sun rises from the east, and sets in the west - this is a well-established fact for the longest time, and this is due to ...

Stars often whip their planets with solar winds and radiation, pull them ever closer with gravity and sear them with heat.