Diameter: 32,000 miles Location>: 7th planet from Sun Number of Moons: 17
Average Distance from Sun: 1.8 billion miles
First observed: 1781
Cloud Top Temperature: -320 degrees F
Orbital period: 84 Earth years
Characteristics: atmosphere made of methane, helium, and hydrogen; has a core of silicate rock; blue-green appearance caused by clouds of methane ice crystals
