Do you think you know everything? Well, you might be right or wrong. Well if your right, you will learn again. If your wrong you will learn some more. Well here in science we learned a lot of different things like planets, how people found the Earth, and space. Today you will learn the planet and how close they are to the Sun. The closest planet to the Sun is Mercury at 0.4au away, then comes Venus at 0.7au away, then we have Earth at 1 au away, then it's Mars at 1.5au, then we can see that Jupiter is clearly next at 5.2au, then there is Saturn at 9.5au, as we get far away we go to Uranus at 19.2, then Neptune at 30.1, then the little 'planet' Pluto at 39.9 au.