What are Planets and its types

» These are opaque bodies which continuously revolve around and are lighted by the Sun.
» There are eight planets in the Solar system.
» A ninth planet has been recently discovered by NASA named as Carla.
» The sequence of planets according to their distance from the Sun is Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune.
» The sequence of planets according to their size (in descending order i.e. from big to small) is Jupiter, Saturn, Uranus, Neptune, Earth, Venus, Mars, Mercury.
» Jupiter is the biggest and mercury is the smallest planets of our solar system.