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Neptune!!! By: Alexia Lawhorn The sun formed 4.56 billion years ago. The planet that formed closest to the sun was mercury. We have the planets that are called the inner planets. those planets are mercury, Venus, earth, and mars. There are other planets known as the gas giants. Those planets are Jupiter, Saturn, Uranus, and Neptune. There is a asteroid belt between mars and Jupiter. the galaxy that earth is in is the milky way. * Neptune is way bigger than earth. The tempter for Neptune is at least 55 degrees Celsius. It is made out of “ice” and rocks with about 15% hydrogen and a little helium. Neptune also has 13 known moon. They think that Neptune might have more then 13 moons though. The day rotation is 19 earth hours. The year rotation is 165 earth years. Witch is longer than us. *Description!!! Neptune is 4,504,000,000 km away from the sun. If you were to measure it in au’s it is 30.06 au away from the sun. The size of Neptune's diameter in kilometers is 49,532km. When it is compared to earth it is at least 4 times bigger than earth. *Location and Size!! *Interesting facts!!!! * On Neptune there is a small irregular white cloud that zips around Neptune every 16 hours. It is known as “ the scooter”. * In in roman mythology Neptune ( Greek: Poseidon) was god of the sea!! http://nineplanets.org *Sources!!!