A newly discovered dwarf planet called 'Ammonite' (2023 KQ14) has been spotted in the outer solar system, and it could be another nail in the coffin for the Planet Nine hypothesis.

New evidence suggests Ceres could be one of the most important places to explore in the solar system. Donald Trump's ...

An international team led by the Universities of Geneva (UNIGE) and Montreal published the first results today from the NIRPS ...

A newly found object may set a new record for the most distant dwarf planet in the solar system. The object, called V774104, lies about nine and a half billion miles from the sun, or two to three ...

The dwarf planet, called 2014 UZ224, measures about 330 miles (530 kilometers) across and is located about 8.5 billion miles (13.7 billion km) from the sun, NPR reported today (Oct. 11).

Pluto is the most famous of the dwarf planets -- long considered our solar system's ninth planet until it was demoted in 2006 when the International Astronomical Union created a new definition for ...

Scientists in Michigan have found a new dwarf planet in our solar system. It's about 330 miles across and some 8.5 billion miles from the sun. It takes 1,100 years to complete one orbit.

To put it in context, Pluto, which is the most famous dwarf planet, is roughly 1,491 miles in diameter. Hygiea would be the smallest dwarf planet with a rotation rate of around 13.8 hours.

One Pluto year, for c is about 248 Earth years. The new object was also confirmed by the Minor Planet Center. [Meet the Solar System's Dwarf Planets] ...