In 1610 Galileo
was the first person to see Saturn through a telescope. Its shape puzzled him, because it didn’t look spherical, but looked more like an oval. In 1655, Christiaan Huygens
had a better telescope and could see the rings more clearly. Two decades later, Giovanni Cassini made the discovery that the rings were not solid, but made up of particles. He also saw that there was more than one ring, and there was a large gap, 2980 miles wide, between two of them. The gap was called the Cassini Division, named in his honor.