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Why is pluto no longer a planet?

BingMag Explains why is pluto no longer a planet

Pluto is no longer considered a planet because of a redefinition of the term "planet" by the International Astronomical Union (IAU) in 2006. According to the new definition, a planet must meet three criteria:

1. It must orbit the Sun.

2. It must be spherical in shape, meaning it has enough self-gravity to pull itself into a round shape.

3. It must have cleared its orbit of other debris.

Pluto meets the first two criteria, but it fails to meet the third one. Its orbit is not entirely clear of other objects, as it shares its orbit with numerous other icy bodies in the Kuiper Belt. Therefore, the IAU reclassified Pluto as a "dwarf planet" rather than a full-fledged planet.

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