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  1. nasa.gov
    https://solarsystem.nasa.gov › moons › in-depth.amp

    In Depth | Moons – NASA Solar System Exploration

    Twelve American astronauts landed on the Moon during NASA's Apollo program from 1969 to 1972, studying the Moon and bringing back rock samples. Usually the term moon brings to mind a …

  2. nasa.gov
    https://solarsystem.nasa.gov › solar-system › our-solar-system › in-depth.amp

    In Depth | Our Solar System – NASA Solar System Exploration

    The giant planets Jupiter and Saturn lead our solar system’s moon counts. In some ways, the swarms of moons around these worlds resemble mini versions of our solar system.

  3. nasa.gov
    https://solarsystem.nasa.gov › internal_resources
    [PDF]

    Kuiper Belt and Oort Cloud - NASA Solar System Exploration

    Eris has a small moon named Dysnomia. The discovery of Eris — orbiting the Sun and larger than Pluto (which was then designated the ninth planet) — forced astrono-mers to consider whether Eris should …

  4. nasa.gov
    https://solarsystem.nasa.gov › ambassadors › contact

    Directory - NASA Solar System Exploration

    Oct 21, 2025 · PLANETS Mercury Venus Earth Mars Jupiter Saturn Uranus Neptune DWARF PLANETS Pluto Ceres Makemake Haumea Eris HYPOTHETICAL Planet X Moons

  5. nasa.gov
    https://solarsystem.nasa.gov › psyche_images

    Psyche Raw Image: Imager B - NASA Solar System Exploration

    PLANETS Mercury Venus Earth Mars Jupiter Saturn Uranus Neptune DWARF PLANETS Pluto Ceres Makemake Haumea Eris HYPOTHETICAL Planet X Moons

  6. nasa.gov
    https://solarsystem.nasa.gov › planet-compare

    Planet Compare - NASA Solar System Exploration

    Oct 21, 2025 · NASA’s real-time science encyclopedia of deep space exploration. Our scientists and far-ranging robots explore the wild frontiers of our solar system.

  7. nasa.gov
    https://solarsystem.nasa.gov › europa-by-the-numbers

    Europa By the Numbers – NASA Solar System Exploration

    May 16, 2024 · Europa is one of the largest of Jupiter’s more than 90 moons. It's the sixth-closest moon to the planet.

  8. nasa.gov
    https://solarsystem.nasa.gov

    RPS 3D Viewer - NASA Solar System Exploration

    Oct 21, 2025 · PLANETS Mercury Venus Earth Mars Jupiter Saturn Uranus Neptune DWARF PLANETS Pluto Ceres Makemake Haumea Eris HYPOTHETICAL Planet X Moons

  9. nasa.gov
    https://solarsystem.nasa.gov › solar-system › kuiper-belt › in-depth.amp

    In Depth | Kuiper Belt – NASA Solar System Exploration

    Pluto, Eris, Haumea, and Quaoar are all Kuiper Belt objects that have moons. One thing that makes binary KBOs particularly interesting is that most of them may be extremely ancient, or primordial, …

  10. nasa.gov
    https://solarsystem.nasa.gov › pluto-by-the-numbers

    Pluto By the Numbers - NASA Solar System Exploration

    Oct 21, 2025 · SURFACE AREA The outer or uppermost part of a planet, moon, asteroid, comet or other body. 6,427,806 square miles 196,936,994 square miles

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