Why do planet Pluto is not included anymore in the solar system?

Answer 1

It is part of the Solar System. The Solar System includes planets, moons, comets, asteroids, a star and dwarf planets like Pluto. It's just not a planet. It never was a planet (according to the new definition).

A planet is a celestial body that (a) has sufficient mass for its self-gravity to overcome rigid body forces so that it assumes a hydrostatic equilibrium (nearly round) shape, and (b) is in orbit around a star, and is neither a star nor a satellite of a planet."

Pluto is no longer considered a planet because it does not fulfill the criteria, but Pluto never stopped being considered a part of the solar system. It still orbits the same star, although it is a very distant orbit.

Answer 2

PlutoPluto is still included in our solar system. It's just no longer a planet, but a dwarf planet.

See related question for more details.

Answer 3

It’s just another Kuiper Belt object.
Pluto still is in the solar system. However, because of its smaller size and gravitational pull, it is no longer considered a planet. Pluto is a dwarf planet.

Answer 4

Pluto is still in the solar system.

However, while it was called a planet, it is now been re-classified as a dwarf planet. This means that while there were 9 planets in the solar system, there are now only 8.

Answer 5

Pluto was reclassified as a "dwarf planet" in 2006 due to new criteria for what constitutes a planet. Pluto did not meet the criteria because it has not cleared its orbit of other debris. This decision was made by the International Astronomical Union.

Answer 6

Pluto is to far from the solar system so it is not part of the solar system.

Answer 7

It has no core. The other planets keep it in the gravitational pull. Pluto was found to be nothing more than a floating rock and ice.

Answer 8

Pluto is 16,3456 distace from the sun.