Is Pluto a Planet?
10th Grade · Science · 55 min
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Learning Objective
I can argue whether Pluto should be classified as a planet using evidence and reasoning.
- 1
The ancient Greeks called objects that moved against the background of stars 'planetes', meaning wanderer.
- 2
According to the IAU, a planet must orbit the sun, have sufficient mass to be nearly round, and clear its neighborhood of other objects.
- 3
Pluto is considered a dwarf planet because it has not cleared its neighborhood and resides in the Kuiper Belt.
