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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 - 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 …

  4. Pluto and Dwarf Planet Resources - Science@NASA

    Nov 20, 2025 · The International Astronomical Union (IAU) has recognized five dwarf planets: Pluto, Ceres, Haumea, Makemake, and Eris. But there may be many more waiting to be …

  5. Solar System Exploration - Science@NASA

    Dec 4, 2025 · Our solar system includes the Sun, eight planets, five officially named dwarf planets, hundreds of moons, and thousands of asteroids and comets. Our solar system is …

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

    Apr 22, 2025 · The closest dwarf planet to the Sun, and the only dwarf planet in the inner solar system, Ceres orbits the Sun from an average distance of 257 million miles (413 million …

  7. Space Shorts: What is a Dwarf Planet? - Science@NASA

    May 11, 2015 · There may be dozens of dwarf planets in our solar system. So far, we've classified just a handful -- most of them are very far away. Pluto is the most famous, but closer to home …

  8. 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 …

  9. 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 …

  10. Eris - Science@NASA

    Apr 24, 2025 · The discovery of Eris help trigger a debate in the scientific community that led to the International Astronomical Union's decision in 2006 to clarify the definition of a planet. …