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  1. About the Planets - Science@NASA

    Feb 3, 2026 · About the Planets 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 …

  2. Our Solar System - NASA Science

    Mar 15, 2016 · Our solar system is made up of a star—the Sun—eight planets, 146 moons, a bunch of comets, asteroids and space rocks, ice, and several dwarf planets, such as Pluto.

  3. Solar System: Facts - NASA Science

    Mar 12, 2025 · Our solar system includes the Sun, eight planets, five dwarf planets, and hundreds of moons, asteroids, and comets.

  4. Solar System Exploration - Science@NASA

    Mar 11, 2026 · The solar system has one star, eight planets, five dwarf planets, at least 290 moons, more than 1.3 million asteroids, and about 3,900 comets.

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

    Apr 22, 2025 · Our solar system has eight planets, and five officially recognized dwarf planets. Which planet is biggest? Which is smallest? What is the order of the planets as we move out from the Sun? …

  6. Our Solar System - NASA Science

    Feb 18, 2009 · Our solar system features eight planets, seen in this artist's diagram. Although there is some debate within the science community as to whether Pluto should be classified as a Planet or a …

  7. Our Solar System Images - Science@NASA

    Feb 28, 2025 · Our solar system includes the Sun, eight planets, five officially named dwarf planets, hundreds of moons, and thousands of asteroids and comets.

  8. Temperatures Across Our Solar System - NASA Science

    Nov 16, 2023 · An illustration of planets in our solar system showing their mean temperatures. Planets and dwarf planet Pluto are not to scale.

  9. What is a Planet? - Science@NASA

    Feb 3, 2026 · It is unlike the terrestrial planets (Mercury, Venus, Earth, Mars), or the gas giants (Jupiter, Saturn), or the ice giants (Uranus, Neptune). Charon, its huge satellite, is nearly half the size of Pluto …

  10. Discovery of eight planets makes alien system the first to tie with our ...

    Dec 14, 2017 · Our solar system now is tied for most number of planets around a single star, with the recent discovery of an eighth planet circling Kepler-90, a Sun-like star 2,545 light years from Earth.