The largest and earliest formed planet in the Solar System, contains over twice as much material as the rest of the solar system combined. Influenced the formation of the other bodies in the solar system greatly. Second brightest planet in the sky and named after the king of the gods. Has four large moons and dozens of smaller ones. Upper atmosphere composed of liquid hydrogen and helium, may have a small rocky core and no solid surface. Has banded cloud features and giant long lasting storms such as the Great Red Spot. Has a powerful magnetic field. Visited by many spacecraft, orbited by Galileo. Juno probe is en route to the planet.