... at the core (Saturn 2). From Earth, two prominent rings and one faint ring can be seen. Though they look continuous, the rings are actually composed of innumerable small particles each in an independent orbit. These rings range in size from a centimeter to several meters. Saturn has eighteen satellites, including: Pan, ... the only spacecraft to visit Uranus. It is now known that Uranus has 21 moons, one of which was just recently discovered and does not yet have an official name. Uranus is the first planet discovered in modern times (1781), and had been seen many times before, but it wa...

• Word Count: 2531
• Approx Pages: 10
• Has Bibliography
• Grade Level: High School