Step 1 : Introduction to the question "10. Saturn was the first planet known to have ____________."
...1. Craters 2. Satellites 3. Rings 4. Sunspots Saturn's rings were actually detected by Galileo. He noted Saturn's odd shape, but he couldn't determine what was causing it. It was not until 1659 that Christiaan Huygens figured out that they were rings, although at first no one believed him. The rings are made up of rocks and ice particles.
