Why pluto is not considered a 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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Pluto is not considered a planet because of the following reasons :-
- It's smaller than any other planet, even smaller than Earth's moon.
- It's dense and rocky, like the terrestrial planets.For this reason, many scientists believe that Pluto originated elsewhere in space and got caught in the sun's gravity.
- Pluto used to be one of Neptune's moons.
- Pluto's orbit is erratic. The planets in our solar system all orbit the sun in a relatively flat plane.
- One of its moons, Charon, is about half Pluto's size. Some astronomers have recommended that the two objects be treated as a binary system rather than a planet and satellite.
These are the some of the reason why pluto is not a planet anymore.
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