1. Neptune Brett and Zack

2. General Info 8 th planet from the sun Fourth largest in diameter (smaller in diameter but larger in mass than Uranus) 4,504,000,000 km from the sun 49,532 km in diameter 1.0247^26 kg in mass

4. Info Continued Neptune (Poseidon in green language) means god of the sea 13 moons Magnetic Field is off-centered and at a large angle to it’s rotation axis

5. Moons Triton is Neptune’s largest moon. It contains 99.5% of the mass that orbits Neptune Nereid Has one of the most eccentric orbits of all moons in our solar system Proteus notable for being as large as a body of its density can be without being pulled into a spherical shape by its own gravity

6. TritonNereid Proteus

7. Composition Icy and rocky, with about 15% helium and a little nitrogen Rings: Dark with bright clumps May not have distinct internal layering Most likely a small core of rocky material

9. Atmosphere Atmosphere is mostly hydrogen and helium, with a small amount of methane. The blue color of Neptune is created by the absorption of red light by methane in the atmosphere. There is also an unidentified chromophore which gives clouds a rich blue tint.

10. Early Observation In 1613, Galileo first observed Neptune when it was very close to Jupiter, but he thought it was just a star. Discovered in 1846

11. Visited Has only been visited by one spacecraft, Voyager 2, on August 25, 1989

12. Work Cited "Neptune L Neptune Facts, Pictures and Information." The Nine Planets Solar System Tour. Web. 18 Apr. 2011.. "Neptune." Wikipedia, the Free Encyclopedia. Web. 18 Apr. 2011.. "The Planet Neptune." Space Projects - Space Information - Space Shop. Web. 18 Apr. 2011.. "Planets: Neptune." Solar System Exploration. Web. 18 Apr. 2011..