Do you know how many planets in our Solar System have rings? Or how many have moons? Learn some interesting facts about the planets in our Solar System with these free printable posters!

The 4 planets closest to the Sun are Mercury, Venus, Earth and Mars. They are called the inner or terrestrial planets. 

The 4 outer planets, Jupiter, Saturn, Uranus and Neptune, are larger and cooler. They contain gases (plus ices). Together they contain 99% of the mass that orbits the Sun. They are often called giant planets. 

If you want to know even more, take a look at our Planets pages.