Saturn
Saturn is a the second largest planet in the solar system. So large that 750 Earth-sized objects could fit inside it. It is composed of much the same gases as Jupiter is. In fact, Saturn is so light, that if you found an ocean big enough it would float! The rotation of Saturn is just a little more than twice as fast as the rotation of Earth. The gas planet makes a complete turn in about 10 hours. On average Saturn is about 890 million miles from the Sun. This makes the average temperature about 300 degrees below zero.Which explains why Saturn's rings are made primarily of ice.