Pluto isn’t the only dwarf planet in our solar system's outer reaches. Now is an ideal time to look for the egg-shaped Haumea ...

There are five known dwarf planets in our solar system. One of them is named Ceres, after the Roman goddess of corn, agriculture, and harvests. Ceres is the closest dwarf planet to the sun.

Our solar system has eight planets but in recent years ... Apart from Pluto, which was demoted from a planet to a dwarf planet in 2006, no planets have been found beyond Neptune or the Kuiper ...

Every object in our Solar System is held in place by the Sun ... The largest object is the asteroid belt is the dwarf planet Ceres, which is 950km in diameter (that's about the same the length ...

Most of us grew up learning that there are nine planets in our solar system. Back in 2006 that all ... planet to its new classification as a dwarf planet, leaving just eight true planets in ...

Astronomers have revealed new evidence that there are not just one but four tiny planets circling around Barnard's Star, the second-nearest star system to ... Barnard's Star is our cosmic neighbor ...

The relative quantities of volatile gases like methane and ethane can reveal key details about distant Kuiper Belt objects.

The Carnegie Institution for Science and the International Astronomical Union’s Minor Planet ... of the Solar System, will help us to better understand what happens on the fringes of our Solar ...

Best known for driving demotion of Pluto to dwarf planet, astronomer Mike Brown discusses the next horizons in our solar system, including the hunt for the elusive Planet 9. This article was ...

Now European Southern Observatory (ESO) thinks one of the objects floating along the main belt might be the smallest dwarf planet in our solar system — an asteroid known as Hygiea. Hygiea isn ...