The status of Pluto not withstanding, our solar system has 8 planets, but one astronomer believes we used to have a ninth ...

Our Solar System is home to many unique planetary bodies, including protoplanets and dwarf planets. Here are the unique ...

WASHINGTON, May 30 (Reuters) - Scientists have identified an object about 435 miles (700 km) wide inhabiting the frigid outer reaches of our solar system that might qualify as a dwarf planet, spotting ...

“It’s a chemical signature no ordinary, ‘first-generation’ planet should carry, which told us that this new planet was ...

Learn about the recently discovered trans-Neptunian object that may eventually join Pluto as a dwarf planet, found at the edge of our solar system. So many unexplored secrets still lie at the ...

The solar system could be destroyed much sooner than we thought, scientists say - Outer planets could be thrown out into the ...

See more of our trusted coverage when you search. Prefer Newsweek on Google to see more of our trusted coverage when you search. A team of astronomers believe they may have discovered a new dwarf ...

The dwarf planet Ceres is cloaked in a layer of asteroid dust that disguises its true surface composition, a new study suggests. A new color movie combines more than 100 images taken by NASA's New ...

Add Yahoo as a preferred source to see more of our stories on Google. Astronomers discover potential dwarf planet 2017 OF201 beyond Neptune. (photo credit: Sihao Cheng et al) The researchers said 2017 ...

Strange hexagonal diamonds may have been jettisoned into space when a dwarf planet collided with a large asteroid around 4.5 billion years ago. A new model exploring the dwarf planet Ceres suggests ...