PLUTO(It is not considered as a 9th planet in Solar system)

PLUTO:

At first pluto was considered as the 9th planet in our solar system.Later it was excluded from 9th planet since it does not obeys the basics laws and properties that the planet should have.The planet Pluto had been discovered by the astronomer named Tombagh in1930 After 48 years that is in 1978  astronomers founded the natural satellite(moon) of pluto and named it as Charon.The sun ray's reaches the pluto's surface in 4 hours and its temperature is -233 degrees.....  Pluto's properties are totally different compared to other planets and it doesn't support basic three laws that the planet should have. In August 2006 the International Astronomical Union (IAU), the organization charged by the scientific community with classifying astronomical objects, voted to remove Pluto from the list of planets and give it the new classification of dwarf plane the scientists considered the pluto as not a planet of a solar system and considered it as "Dwarf planet" .The dwarf planet Pluto has five known moons. In order of discovery they are Charon, Nix, Hydra, S/2011 P 1 ("P4"), and S/2012 P 1 ("P5"). Charon, the largest of the five moons, is mutually tidally locked with Pluto, and is massive enough that Pluto–Charon is sometimes considered a double object.