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  1. Pluto & Dwarf Planets - Science@NASA

    Apr 29, 2025 · Our solar system has five dwarf planets: In order of distance from the Sun they are: Ceres, Pluto, Haumea, Makemake, and Eris.

  2. About the Planets - Science@NASA

    May 28, 2025 · Our solar system has eight planets: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune. There are five officially recognized dwarf planets in our solar system: …

  3. Pluto and Dwarf Planet Resources - Science@NASA

    Nov 20, 2025 · A composite image showing the five dwarf planets recognized by the International Astronomical Union.

  4. Kuiper Belt - Science@NASA

    Mar 12, 2025 · The Kuiper Belt The Kuiper Belt is a doughnut-shaped region of icy objects beyond the orbit of Neptune. It is home to Pluto and most of the known dwarf planets and …

  5. Eris - Science@NASA

    Apr 24, 2025 · The new ruling reclassifies Pluto as a dwarf planet and reduces the number of planets in the solar system to eight. Both Eris and the asteroid Ceres are also classified as …

  6. Planet Sizes and Locations in Our Solar System - Science@NASA

    Apr 22, 2025 · Each planet’s width is compared to Earth’s equatorial diameter, which is about 7,926 miles (12,756 kilometers). At the bottom of the page, find a handy list that shows the …

  7. Pluto: Facts - NASA Science

    Apr 22, 2025 · Dwarf planet Pluto is a member of a group of objects that orbit in a disc-like zone beyond the orbit of Neptune called the Kuiper Belt. This distant realm is populated with …

  8. Moons - Science@NASA

    May 20, 2025 · Hundreds of moons orbit planets, dwarf planets - even asteroids. As of March 25, 2025, there was a total of 891 confirmed moons in our solar system. Of those, 421 moons are …

  9. Ceres - Science@NASA

    Apr 29, 2025 · A curated collection of resources about dwarf planets, including activities that can be done at home, as well as videos and animations, images, printable graphics, and 3D …

  10. Pluto - Science@NASA

    Apr 29, 2025 · Pluto is a dwarf planet located in a distant region of our solar system beyond Neptune known as the Kuiper Belt. Pluto was long considered our ninth planet, but the …