Why did scientists determine that Pluto should no longer be classified as a planet?

Answer 1

that Pluto should disapper cause

Answer 2

The 2006 definition adopted by the IAU (International Astronomical Union) disqualifies pluto as a planet.

A planet is a natural body:

1. In orbit around a sun (or the remnants of a sun)
2. Large enough to have taken on a nearly spherical shape (its gravity has overcome rigid forces that would otherwise maintain a very irregular shape)
3. Has cleared its neighborhood of its orbit of debris.

Pluto has not done the last of these, and is therefore classified as a dwarf planet.

Answer 3

According to the International Astronomical Union, any celestial object in our solar system must fulfil all three of the following criteria to become an official planet: # It must orbit the sun # Its gravity must must be strong enough to make it almost spherical # It must have enough mass to force away other smaller celestial bodies like meteors/comets/asteroids/other pieces of space debris. Unfortunately for those in favour of Pluto's planetary status, it falls down on the third point. It's now merely considered a large lump of rock in the Kuiper Belt - a region of icy rocks and clumps of debris in the outer solar system.

Answer 4

Pluto acts more like a moon than a planet

it orbits the sun in a different orbit than the other planets so they decided that they would declassify Pluto as a planet

Answer 5

Because its obits are different from other planets.

It is a dwarf planet.

Answer 6

Because Pluto doesn't meet the requirements needed to be a planet.