A recent study found that Jupiter was once twice the size that it is now, making it big enough to swallow up 2,000 Earths.

An accidental discovery in an astronomy show offers researchers a new clue about the mysterious Oort Cloud, a large expanse ...

For the dwarf planet candidate, one trip around the sun takes over 24,000 years. Its orbit challenges a proposed path for a hypothetical Planet Nine.

Kat Volk: It would be visually stunning because it would make, you know, the best, most awesome, largest comet of all time to stick Pluto in the inner solar system. Leah Crane: You heard that right.

Rubin Observatory in Chile will discover 2.85 million previously undetected objects in the solar system in its first year of ...

That’s just one generation, a fraction of a human lifetime, to make it to the edges of our Solar System. But Voyager’s journey has only just begun. Beyond the heliopause sits the Oort cloud ...

Southwest Research Institute's Dr. Craig DeForest discussed the latest accomplishments of NASA's PUNCH (Polarimeter to Unify ...

NASA's James Webb Space Telescope has made the first-ever and long-anticipated detection of ice outside of our own solar system. The frozen water was found within a debris disk circling HD 181327, a ...

Astronomers are racing to explain peculiar orbits of faraway objects at the edge of our solar system. Among the many mysteries that make the furthest reaches of our solar system, well, mysterious ...

Does it ever make you wonder how all those different systems could come together, from dust and cold gas floating in the void? How our own Solar System came to be? How we could know? Telescopes ...