Sarah+Neptune

= Neptune Facts =

Diameter: 49,532 km Distance from the Sun: 4.5 billion km  One Orbit: 164.9 Earth years One Spin: 16.1 hours Number of Moons: 13

Uranus and Neptunes blue colouring is caused by the methone gas their atmosphere absorbing red light. Like Uranus, Neptune has a core of rock and possibly ice in its centre. This is surrounded by a mix of water, methane ices, and topped off by a hydrogen-rich atmosphere. Neptunes only large moon, Triton, is about three quarters of the size of Earth's moon. A rocky world with and icy crust, it has grooves, ridges and dark patches formed by dark dust shed by eruptions.

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