A newly discovered dwarf planet called 'Ammonite' (2023 KQ14) has been spotted in the outer solar system, and it could be ...

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

Discovery of 2017OF201, a large trans-Neptune Object, challenges previous beliefs about the Kuiper Belt and hints at the existence of a theoretical Planet Nine.

Specific projections for confirmed dwarf planets are uncertain because confirmation requires detailed characterization (e.g., size, shape, and equilibrium state), but estimates for candidates are ...

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 ...

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 ...

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).

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.

Over the past decade, researchers have been puzzling through Pluto’s mysteries. Meanwhile, the New Horizons probe heads for interstellar space.

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] ...