Jupiter is colder that Antarctica. The surface temperature of Jupiter is 150 degree Celsius. The surface of Jupiter is a thick mass of ice that never melts as it receives hardly any light or heat from the sun, Jupiter is five times farther away from the sun when compared to the Earth.
Jupiter was called a gas giant, because it was not possible to find out whether a solid layer existed below the ice. The surface of Jupiter is made of ice, but hot molten material exists inside. The hot molten material was discovered in recent years by astronomers with the aid of radio telescopes. Some scientists believe that an insulating material separates the two. Other believe that water separates the two layers.