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AlthoughÂ­ Jupiter, Uranus and Neptune have rings of their own, none are as spectacular as Saturn's. Saturn's rings are also one of the great mysteries in space. But as our spacecraft edge closer than ever to the rings, we're getting a more complete picture of what they're made of and how they came to exist. Saturn has six main rings, each composed of thousands of tiny ringlets. The rings are huge -- the biggest ones spanning 170,000 miles (273,588 km) in diameter. They are, however, proportionately very thin -- only about 650 feet (200 meters) thick. They aren't solid, as they appear from Earth, but are instead made up of floating chunks of water ice, rocks and dust that range in size from specks to enormous, house-sized pieces that orbit Saturn in a ring pattern.
by Fraser Cain on January 23, 2009. Saturn is a ball made up almost entirely of hydrogen and helium. The density and temperature changes the deeper into the planet you go, but Saturn canât be said to have a solid surface. If you tried to walk on the surface of Saturn, you would fall into the planet, suffering higher temperatures and pressures until you were crushed inside the planet. Saturn captured by Voyager. Image credit: NASA/JPL. But Saturn appears to have a surface, so what are we looking at. The outer atmosphere of Saturn consists of 93% molecular hydrogen and the rest helium, with trace amounts of ammonia, acetylene, ethane, phosphine and methane.