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 ...

Add Yahoo as a preferred source to see more of our stories on Google. A composite image comparing the relative sizes of our solar system's known dwarf planets, including the newly discovered 2017 ...

Add Yahoo as a preferred source to see more of our stories on Google. In the cold, distant reaches of the Solar System, far beyond Pluto, astronomers have just identified what could be a new dwarf ...

Anyone who grew up learning that our solar system has nine planets probably remembers the moment Pluto got demoted. That decision back in 2006 wasn't just paperwork. It came from a real, testable set ...

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 ...

A small team led by Sihao Cheng, Martin A. and Helen Chooljian Member in the Institute for Advanced Study's School of Natural Sciences, has discovered an extraordinary trans-Neptunian object (TNO), ...

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 ...

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

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 ...

The small world was found during a search for the hypothetical Planet Nine, and astronomers say the next time it will reach its closest point to the sun is in the year 26186. By Kenneth Chang Kenneth ...