The planet known for its size is Jupiter. As the largest planet in our solar system, Jupiter is classified as a gas giant and boasts a diameter of about 86,881 miles (139,822 kilometers), more than 11 times that of Earth. Its massive size encompasses more than two times the total mass of all other planets in the solar system combined. Jupiter is known for its Great Red Spot, a giant storm larger than Earth, and its striking bands of clouds. Additionally, it has a strong magnetic field and numerous moons, further enhancing its celestial significance.