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, ...

Researchers from the Nanjing Institute of Geology and Paleontology of the Chinese Academy of Sciences and Columbia University ...

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

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

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

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 ...

The monstrous 85-mile-wide comet C/2014 UN271 is the second most distant body originating from the Oort Cloud found to be ...

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

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

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

In the frozen outskirts of the solar system, a reddish dwarf planet orbits in silence. Known as Sedna, it is so distant that ...