How is Pluto discarded from the solar system?

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. read more

Pluto is a complex and mysterious world of mountains, valleys, plains and craters. Discovered in 1930, Pluto was long considered our solar system's ninth planet. But after the discovery of similar intriguing worlds deeper in the distant Kuiper Belt, icy Pluto was reclassified as a dwarf planet. read more

Pluto was not removed from the Solar system, it was just removed from the list of planets in the solar system. Pluto is now considered a dwarf planet rather than a full one. IAU (International Astronomical Union) has three criteria to be fulfilled before an object could be called a planet. read more