When you buy through links on our articles, Future and its syndication partners may earn a commission. A composite image comparing the relative sizes of our solar system's known dwarf planets, ...

For the first time since 2008, two new planets are being added to one of northern Maine's most famous — and scientifically accurate — roadside attractions. Dwarf planets Haumea and Makemake are the ...

A diagram showing the current locations of Pluto, Neptune, and the newly discovered dwarf planet 2017 OF201. (Image credit: Jiaxuan Li and Sihao Cheng) Because it's so difficult to spot solar system ...

Pluto, the most famous dwarf planet, lost its planet status in 2006. Learn more about dwarf planets of the solar system here. NASA's Dawn spacecraft has been granted a mission extension that will ...

Pluto may be demoted again, as researchers work to properly define dwarf planets. PLUTO’S STATUS MAY TAKE a further hit, say Australian astronomers, if around 50 neighbouring space objects join the ...

This story is part of Short Wave's series Space Camp about all the weird, wonderful things happening in the universe. Check out the rest of the series. If you were born in the last century you might ...

Astronomers have long been on the hunt for planet X, a world hidden in the dark corner at the far reaches of the Solar System and they have hit upon a jacket. An object about 700 kilometers wide has ...

WASHINGTON >> Scientists have identified an object about 435 miles wide inhabiting the frigid outer reaches of our solar system that might qualify as a dwarf planet, spotting it as it travels on a ...