Jupiter is the largest planet in the solar system, characterized by its immense mass, which is more than two and a half times the combined mass of the other planets. It is primarily composed of hydrogen and helium, placing it in the gas giant classification. Its visible atmosphere features prominent cloud bands and swirling storm systems, most notably the Great Red Spot, a persistent anticyclonic storm larger than Earth. Jupiter possesses a complex system of icy moons and a powerful magnetic field, and its gravitational influence dominates the dynamics of the inner solar system.