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  2. The Nine Planets is an encyclopedic overview with facts and information about mythology and current scientific knowledge of the planets, moons, and other objects in our solar system and beyond.

    • Planets

      The Planets of the Solar System Detailed information and...

    • Solar System

      The gas planets are composed primarily of hydrogen and...

    • Objects

      Planets for Kids; Buyer’s Guides. Best Astronomy Binoculars;...

  3. Aug 30, 2017 · Learn facts about the solar system’s genesis, plus its planets, moons, and... How many planets are in the solar system? How did it form in the Milky Way galaxy?

    • 4 min
    • 32.4M
    • National Geographic
  4. science.nasa.gov › solar-system › planetsPlanets - NASA Science

    Learn about the eight planets and five dwarf planets in our solar system, their sizes, locations, features, and exploration missions. Find out what makes a planet a planet, and whether there is another planet in the solar system.

  5. Learn about the Sun, the star at the center of our planetary system, and the eight planets that orbit it. Discover the features, moons, and history of each planet, and how they compare to other worlds in the universe.

  6. en.wikipedia.org › wiki › Solar_SystemSolar System - Wikipedia

    Over 99.86% of the Solar System's mass is in the Sun and nearly 90% of the remaining mass is in Jupiter and Saturn. There is a strong consensus among astronomers [e] that the Solar System has at least nine dwarf planets: Ceres, Orcus, Pluto, Haumea, Quaoar, Makemake, Gonggong, Eris, and Sedna.

  7. Learn about the Sun, the star at the center of our planetary system, and the eight planets that orbit it. Discover the features, moons, and history of each planet, and how they compare to other worlds in the universe.

  8. Learn about the Sun, planets, moons, asteroids, comets, and more in our solar system. Explore the latest news, facts, images, and 3D apps from NASA.

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