SOLAR SYSTEM

Detailed explanation-1: -In August 2006 the International Astronomical Union (IAU) downgraded the status of Pluto to that of “dwarf planet.” This means that from now on only the rocky worlds of the inner Solar System and the gas giants of the outer system will be designated as planets.

Detailed explanation-2: -The only difference between a planet and a dwarf planet is the area surrounding each celestial body. A dwarf planet has not cleared the area around its orbit, while a planet has. Since the new definition, three objects in our solar system have been classified as dwarf planets: Pluto, Ceres and Eris.

Detailed explanation-3: -It is only 590 miles (950 km) in diameter and has a mass of just 0.015 percent that of Earth. In fact, Ceres is so small that it is classified as both a dwarf planet and an asteroid, and is often named in scientific literature as one of the largest asteroids in the solar system.

Detailed explanation-4: -Pluto. Eris. Ceres. Makemake. Haumea. 12-Mar-2020