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

Even if Earth does survive, it won’t be pretty. The temperature of our planet will be about 1,300 degrees C, hot enough to ...

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

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

A newly discovered object, dubbed A11pl3Z, appears to be moving too fast and straight to have originated in the solar system.

Astronomers are scrambling to gather data on a mysterious object that’s currently hurtling through the solar system.

Comet or asteroid heading for the Sun is only the third time an interstellar object has been spotted inside our group of ...

It’s officially the third known interstellar object to pass through our solar system and poses no threat to Earth.

The European Space Agency said Wednesday that scientists have discovered what might be only the third known interstellar ...

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

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 out more here.