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  1. en.wikipedia.org › wiki › PlutoPluto - Wikipedia

    Pluto (minor-planet designation: 134340 Pluto) is a dwarf planet in the Kuiper belt, a ring of bodies beyond the orbit of Neptune. It is the ninth-largest and tenth-most- massive known object to directly orbit the Sun .

  2. Jul 13, 2015 · For more than 70 years, Pluto was one of nine planets recognised in our Solar System. But in 2006, it was relegated to the status of dwarf planet by the International Astronomical Union...

  3. Dwarf planet Pluto is a member of a group of objects that orbit in a disc-like zone beyond the orbit of Neptune called the Kuiper Belt. This distant realm is populated with thousands of miniature icy worlds, which formed early in the history of our solar system about 4.5 billion years ago.

  4. science.nasa.gov › dwarf-planets › plutoPluto - NASA Science

    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 International Astronomical Union reclassified Pluto as a dwarf planet in 2006.

  5. Pluto is now classified as a dwarf planet because, while it is large enough to have become spherical, it is not big enough to exert its orbital dominance and clear the neighborhood surrounding its orbit.

  6. Jul 9, 2024 · Pluto is a dwarf planet that lies in the Kuiper [KI-per] Belt. It's an area full of icy bodies and other dwarf planets at the edge of our solar system. Pluto is known as the "King of the Kuiper Belt" – and it's the largest object in the region, even though another object similar in size, called Eris, has a slightly higher mass.

  7. Jan 18, 2022 · By Kenneth Chang. Who doesn’t love Pluto? It shares a name with the Roman god of the underworld and a Disney dog. But is it a planet? More than 15 years after Pluto was demoted to dwarf...

  8. Discovered in 1930, Pluto was long considered our solar system's ninth planet. But after the discovery of similar intriguing worlds deeper in the distant Kuiper Belt, icy Pluto was reclassified as a dwarf planet.

  9. Jun 22, 2024 · By this geophysical definition, Pluto would be a planet again. Planetary insights from a dwarf planet. Planet or not, Pluto is useful for understanding how planets form.

  10. Jun 25, 2024 · Pluto, large, distant member of the solar system that formerly was regarded as the outermost and smallest planet. In 2006 a group of experts in the scientific community voted to give Pluto the new classification of dwarf planet. Learn more about Pluto in this article.