Flexi Says: Being a gas giant, Saturn's atmosphere is extremely thick and makes up the vast majority of the planet. As with Earth's atmosphere, the pressure of Saturn's atmosphere varies with depth. Scientists define the "surface" of a gas giant as the radius at which the atmospheric pressure is equal to Earth's atmospheric pressure at sea level, i.e., 1 bar. On Saturn, that radius is 60,268 km. Below that, atmospheric pressure continues to increase with depth to extremely high levels, likely reaching over 1000 times the atmospheric pressure on Earth's surface. This pressure is high enough to force hydrogen into a solid state in the core of the planet.
