Three words. Gas. Mysterious. Tilted. Yep, tilted. No one knows why, but Uranus is tilted on its axis. Some people (including me) think Uranus was hit by a comet, bumped one of its moons, and the stray moon became Pluto. Uranus looks green because of the methane gas in its atmosphere. Its atmosphere is also made up of helium and hydrogen. There is thought to be a deep ocean on the planet of methane and ammonia. There are 15 moons on Uranus, and did you know Uranus also has rings? I said that Uranus was mysterious because it is, and very little is known about the planet.