Earth is the planet we live on. It is the third planet from the Sun. It is the only planet known to have life on it. Lots of scientists think the earth formed around 4.5 billion years ago. It is one of four rocky planets on the inside of the Solar System. The other three are Mercury, Venus and Mars.
Go to Addons for Earth
| This article, about a planet, is a stub. You can help Orbiterwiki by expanding it.