Question

why is pluto called the dwarf planet?

Answer 1

Answer:

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why is pluto called the dwarf planet?

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The International Astronomical Union (IAU) downgraded the status of Pluto to that of a dwarf planet because it did not meet the three criteria the IAU uses to define a full-sized planet. Essentially Pluto meets all the criteria except one—it “has not cleared its neighboring region of other objects.”

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Answer 2

Answer:

IAU law

Explanation:

For a celestial body to be considered a planet, it has to fulfil three requirements according to IAU. The first says the planet has to be round, while the second says the planet should orbit around a star. The last one says that planets have to clear all objects using the help of it's gravity. Pluto only fulfils the first two requirements so it was considered a dwarf planet in 2006.