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  • Pluto By the Numbers - NASA Solar System Exploration
    Pluto was once our solar system's ninth planet, but has been reclassified as a dwarf planet It's located in the Kuiper Belt
  • In Depth | Our Solar System – NASA Solar System Exploration
    The planetary system we call home is located in an outer spiral arm of the Milky Way galaxy Our solar system consists of our star, the Sun, and everything bound to it by gravity – the planets Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune; dwarf planets such as Pluto; dozens of moons; and millions of asteroids, comets, and meteoroids Beyond our own solar system, there
  • In Depth | Ganymede – NASA Solar System Exploration
    Jupiter’s moon Ganymede is proving to be a fascinating world Not only is it the largest moon in our solar system, bigger than the planet Mercury and the dwarf planet Pluto, but NASA’s Hubble Space Telescope has found the best evidence yet for an underground saltwater ocean on Ganymede The ocean is thought to have more water than all the water on Earth's surface Ganymede’s ocean is
  • NASA Solar System Exploration
    NASA Solar System Exploration
  • Planet Compare - NASA Solar System Exploration
    NASA’s real-time science encyclopedia of deep space exploration Our scientists and far-ranging robots explore the wild frontiers of our solar system
  • RPS 3D Viewer - NASA Solar System Exploration
    NASA’s real-time science encyclopedia of deep space exploration Our scientists and far-ranging robots explore the wild frontiers of our solar system
  • Kuiper Belt and Oort Cloud - NASA Solar System Exploration
    Instead, in 2006, the International Astronomical Union created a new class of objects called dwarf planet, and placed Pluto, Eris, and the asteroid Ceres in this category Subsequent discoveries added Haumea and Makemake to the dwarf planet family Pluto, Eris, Haumea, and Makemake retain their classifi-cation as KBOs (or TNOs)
  • In Depth | Kuiper Belt – NASA Solar System Exploration
    Scientists think it's likely some other force is responsible, such as an undiscovered giant planet (in a very distant orbit), the gravity of passing stars, or gravitational perturbations as the Kuiper Belt was forming long ago Sedna is an example of a detached KBO
  • In Depth | Moons – NASA Solar System Exploration
    Eris, another dwarf planet even more distant than Pluto, has a small moon of its own, named Dysnomia Haumea, another dwarf planet, has two satellites, Hi'iaka and Namaka
  • Io By the Numbers – NASA Solar System Exploration
    NASA’s real-time science encyclopedia of deep space exploration Our scientists and far-ranging robots explore the wild frontiers of our solar system





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