student asking question

Why does Pluto no longer considered a planet?

teacher

Native speaker’s answer

Rebecca

Pluto is no longer considered a planet because it doesn't meet the criteria the IAU (International Astronomical Union) used to define a full-size planet. Although it is considered a "dwarf planet." Some of the reasons for it not being considered a full-size planet includes its size, it's not bigger than earth's moon, Pluto also orbits differently from the other planets, and it's dense and rocky.

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