Which of the following is NOT a planet?

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Multiple Choice

Which of the following is NOT a planet?

Explanation:
Planets are objects that orbit the Sun, are nearly round in shape, and have cleared their orbital path of other debris. Mercury, Earth, and Neptune meet these conditions. Pluto also orbits the Sun and is roughly spherical, but it shares its orbital region with many other objects in the Kuiper Belt and has not cleared that neighborhood, so it isn’t considered a planet. It’s classified as a dwarf planet. The redefinition in 2006 separated planets from dwarf planets, which is why Pluto isn’t included among the major planets.

Planets are objects that orbit the Sun, are nearly round in shape, and have cleared their orbital path of other debris. Mercury, Earth, and Neptune meet these conditions. Pluto also orbits the Sun and is roughly spherical, but it shares its orbital region with many other objects in the Kuiper Belt and has not cleared that neighborhood, so it isn’t considered a planet. It’s classified as a dwarf planet. The redefinition in 2006 separated planets from dwarf planets, which is why Pluto isn’t included among the major planets.

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