This document contains information about the planet Jupiter, including its mean radius of 43,440.7 miles, diameter of 88,846 miles, and diameter at the poles of 83,082 miles. Additional facts provided include that Jupiter is the 4th brightest planet, was first recorded by ancient Babylonians, has the shortest day, largest moon Ganymede, a thin ring system, unique cloud features, the Great Red Spot, and the strongest magnetic field.