Do you know your Planets?

A planet (from Greek πλανήτης αστήρ "wandering star") is a celestial body orbiting a star or stellar remnant that is massive enough to be rounded by its own gravity.

Planets are generally divided into two main types: large, low-density gas giants, and smaller, rocky terrestrials. Under IAU definitions, there are eight planets in the Solar System. In order of increasing distance from the Sun, they are the four terrestrials, Mercury, Venus, Earth, and Mars, then the four gas giants, Jupiter, Saturn, Uranus, and Neptune.