Here's what's in our sun's deep freezer.

CNN — A large asteroid could be reclassified as a dwarf planet -- which could make it the smallest in the solar system -- after new research revealed it's shape, astronomers said on Monday. Nestled in ...

As astronomers continue discovering unusual worlds beyond our solar system, many say the question that divided scientists in ...

In the course of studying planets beyond our solar system (6,316 confirmed exoplanets and counting), scientists have discovered some very interesting systems. Consider TOI-201, a compact system ...

Add Yahoo as a preferred source to see more of our stories on Google. On January 5, 2005, astronomers at NASA discovered Eris, the second-largest dwarf planet in the solar system. Eris is just ...

A newly discovered cosmic object is not a planet, not a moon — but a third thing we don’t have a name for yet. The object is about as massive as Jupiter and orbits a brown dwarf — a body that fuses ...

But what exactly is a planet? It seems like an easy question. After all, you’re standing on one right now! But the scientific ...

Artist’s impression of the surface of the dwarf planet Makemake (Credit: ESO/L. Calçada/Nick Risinger (skysurvey.org)) Astronomers have used three telescopes at ESO’s observatories in Chile to observe ...

WASHINGTON (Reuters) - Scientists have discovered the most distant object known in our solar system, so remote and unusual they chose the nickname "Farout" for the slow-moving, icy, pinkish dwarf ...