NASA has discovered an interstellar comet that's wandered into our backyard. The space agency spotted the quick-moving object ...

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

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

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

Mars, a planet once capable of sustaining liquid water and harboring flowing rivers, today stands as a frozen desert. For ...