The hydrogen and helium become gaseous near the planet's surface and merge with its atmosphere, which consists chiefly of the same two elements. A dense layer of clouds covers Saturn. Photographs of the planet show a series of belts and zones of varied colors on the cloud tops. This banded appearance seems to be caused by differences in the temperature and altitude of atmospheric gas masses. The plants and animals that live on the earth could not live on Saturn.
Scientists doubt that any form of life exists on the planet.
The tilt of Saturn's axis causes the sun to heat the planet's northern and southern halves unequally, resulting in seasons and temperature changes. Saturn's temperature is always much colder than the earth's, because Saturn is so far from the sun. The temperatures below Saturn's clouds are much higher than those at the top of the clouds. Many astronomers believe that much of Saturn's internal heat comes from energy generated by the sinking of helium slowly through the liquid hydrogen in the planet's interior. Density and mass.