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

The Solar System seems calm, but that tranquility is fragile. Now imagine one day looking up and spotting something ...

In the outer reaches of our solar system, far beyond the orbit of Pluto, lies Sedna, one of the most mysterious objects ever ...

New research says that Earth could be ejected from our solar system if a passing star was to come close enough.

NASA’s James Webb telescope captured its first direct image of a distant gas giant, revealing groundbreaking insights into ...

For years, astronomers have been searching for a mysterious ninth planet lurking in the dark outer reaches of our solar ...

Recent observations have revealed carbon monoxide venting from the largest comet ever seen, providing clues about its origins ...

It poses no threat to Earth, but this comet, called C/2014 UN271 (Bernardinelli-Bernstein), has enraptured astronomers ever ...

Solar System Planets. Astronomy articles on the eight planets, plus the two dwarf planets, Pluto and Eris. Great pictures of everything in the solar system. Updated daily.