Gas Planet Sizes
Jupiter, Saturn, Uranus, and Neptune are known as the jovian (Jupiter-like) planets because they are all gigantic compared with Earth, and they have a gaseous nature like Jupiter's. The jovian planets are also referred to as the gas giants, although some or all of them might have small solid cores. This diagram shows the approximate relative sizes of the jovian planets.
Image Credit: Lunar and Planetary Institute
Credit: Lunar and Planetary Institute