Also a gas giant, Saturn is the sixth planet from the Sun and is the second largest planet in the solar system. Its atmosphere is composed of 96% hydrogen and 4% helium.
However Saturn is not entirely gaseous. At the center is a small rocky core, similar in composition to Earth, but denser, surrounded by a thick layer of liquid metallic hydrogen and a molecular hydrogen layer.
Saturn is best known for its planetary rings. Although the rings are extremely thin, only 1 kilometer thick, they are about 250,000 kilometres wide. The seven major ring groups are named in alphabetical order in the order of their discovery. They are D, C, B, A, F, G and E. These rings are also made up of thousands of smaller ringlets.
Saturn has over 60 moons. The largest is Titan, discovered in 1655 by C. Huygens.
1 Saturnian day = 10.57 Earth hours
1 Saturnian year = 29.46 Earth years
For this planet's panel in the model, click here
Click here for video of Saturn's moon Titan
Click here for the Wikipedia entry on Saturn