Pluto is a dwarf planet in the Kuiper belt, a ring of bodies beyond Neptune. It was the first Kuiper belt object to be discovered and is the largest known plutoid (or ice dwarf).
WHO DECIDES THE PLANET DEFINITION
International Astronomical Union An international association of professional astronomers, at the PhD level and beyond, active in professional research and education in astronomy.
WHAT NASA CHIEF SAID
“Just so you know, in my view, Pluto is a planet, and you can write that the NASA administrator declared Pluto a planet once again, Bridenstine said during a FIRST robotics event in Colorado this week.
NOTES Pluto has five known moons: Charon (the largest, with a diameter just over half that of Pluto), Styx, Nix, Kerberos, and Hydra. Pluto and Charon are sometimes considered a binary system because the barycenter of their orbits does not lie within either body.
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