The solar system lost its ninth planet back when Pluto was demoted to a dwarf planet, but research might indicate that there ...

Astronomers have uncovered a massive new trans-Neptunian object, 2017 OF201, lurking at the edge of our solar system. With an ...

A new trans-Neptunian object, 2017 OF201, has been found with a vast orbit and potential dwarf planet size. The finding hints ...

Even if life never took hold on Ceres, the discovery could help broaden the range of environments that could potentially be ...

New models suggest that Ceres, the asteroid belt's largest object, once had a radioactive core that could have sustained life ...

Could an ocean – likely needed to sustain life – even survive on a planet orbiting close to a dead star? The sun will someday ...

In Roman mythology, Pluto is the god and ruler of the dead. For a return mission to the dwarf planet, Howett and her ...

Ceres is a small, cold dwarf planet in the asteroid belt between Mars and Jupiter, but billions of years ago it could have ...

The category "dwarf planet" was created in 2006 to make room for the many large bodies being discovered on the outer reaches of the solar system. Here's a tour of the five currently recognized ...

A new dwarf planet has been discovered in the icy realms of space beyond Neptune, researchers said Monday.

All the latest science news on dwarf planets from Phys.org. Find the latest news, advancements, and breakthroughs.

When Pluto was designated a "dwarf planet" in 2006, it ignited a fierce debate about what the classification actually means.