Jupiter is referred to as the "Giant Planet" due to its massive size and significant presence in our solar system. It is the largest planet, boasting a diameter of about 86,881 miles (139,822 kilometers), making it more than 11 times larger than Earth. Jupiter is primarily composed of hydrogen and helium and is known for its prominent bands of clouds, the Great Red Spot, and a strong magnetic field. Its massive size and immense gravitational pull have significant effects on the orbits of other celestial bodies in our solar system. Jupiter also has dozens of moons, with Ganymede being the largest.