Definition
A gas giant is a large planet that is primarily composed of hydrogen and helium, with a relatively small rocky core. These planets are characterized by their immense size, strong gravitational pull, and lack of a solid surface. Jupiter and Saturn are classic examples, famous for their swirling cloud patterns. They often have numerous moons and ring systems. Imagine a colossal ball of gas held together by gravity. Gas giants offer clues about the early formation of solar systems.