Hydrogena and helium gase are present in saturn.
The gas giant Saturn contains many of the same components as the sun. Although it is the solar system's second largest planet, it lacks the necessary mass to undergo the fusion needed to power a star. Still, its gaseous composition — and the stunningly beautiful rings that surround it — make it one of the more interesting object in the solar system
Saturn is predominantly composed of hydrogen and helium, the two basic gases of the universe. The planet also bears traces of ices containing ammonia, methane, and water. Unlike the rocky terrestrial planets, gas giants such as Saturn lack the layered crust-mantle-core structure, because they formed differently from their rocky siblings.
Saturn is classified as a gas giant because it is almost completely made of gas. Its atmosphere bleeds into its "surface" with little distinction. If a spacecraft attempted to touch down on Saturn, it would never find solid ground. Of course, the craft would be fortunate to survive long before the increasing pressure of the planet crushed it.
Because Saturn lacks a traditional ground, scientists consider the surface of the planet to begin when the pressure exceeds one bar, the approximate pressure at sea level on Earth.
Saturn's interior
At higher pressures, below the determined surface, hydrogen on Saturn becomes liquid. Traveling inward toward the center of the planet, the increased pressure causes the liquefied gas to become metallic hydrogen. Saturn does not have as much metallic hydrogen as the largest planet, Jupiter, but it does contain more ices. Saturn is also significantly less dense than any other planet in the solar system; in a large enough pool of water, the ringed planet would float.
Like Jupiter, Saturn is suspected to have a rocky core surrounded by hydrogen and helium. However, the question of how solid the core might be is still up for debate. Though composed of rocky material, the core itself may be liquid.
The distance to Saturn from the sun is significant, keeping the average temperature of Saturn low, but things are hotter within the rocky core. There, temperatures can reach as high as 21,000 degrees Fahrenheit (11,700 degrees Celsius).