Pluto

Pluto occupies the Kuiper Belt, the region of small bodies beyond Neptune, and is classed as a dwarf planet.[3]

History

Pluto's discovery came in 1930, NASA says.[3] The USGS account links Pluto's discovery to a search prompted by Percival Lowell's predicted trans-Neptune world.[2] The New Horizons spacecraft made its Pluto flyby in 2015.[3]

Findings

Five moons are known to orbit Pluto, with Charon the largest.[4] JPL reports Pluto's mean radius as 1,188.3 kilometres.[1]

Sources

  1. Solar System Dynamics: Physical Parameters. Licence: facts-only (Track B), no text reused. Attribution: NASA/JPL-Caltech.
  2. USGS Gazetteer of Planetary Nomenclature. Licence: US federal work, public domain (17 USC 105). Attribution: U.S. Geological Survey.
  3. Pluto: Facts | NASA Science. Licence: facts-only (Track B), no text or images reused. Attribution: NASA.
  4. Pluto | NASA Science. Licence: facts-only (Track B), no text or images reused. Attribution: NASA.

Evidence as of 2026-11-01.