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

The Sun, our life-giving star, is slowly dying. In about 5 billion years, it will exhaust its fuel and transform into a red giant, altering the solar system forever. But long before that, the Sun’s ...

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 ...

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

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.

Passing stars could trigger instability across the solar system, resulting in Earth being hauled out of its orbit.

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