The Solar System
| Mercury
| Venus
| Earth
| Mars
| Ceres
| Jupiter
Saturn
| Chiron
| Uranus
| Neptune
| Pluto
The Kuiper Belt and the Oort Cloud
| Quaoar
| Eris
| Sedna
Uranus [Pronounce it 'yoor-uh-nuss' according to Sir Patrick Moore . ] is the seventh planet from our Sun and is a gas giant. Its blue-green colour is caused by methane gas in an atmosphere mainly composed of hydrogen and helium.
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