Cassini At Jupiter: Red Spot Movie . ... Credit Copyright: CICLOPS , NASA , JPL , University of Arizona Explanation: Everything is big on Jupiter , the solar system's reigning gas giant. For example, Jupiter's Great Red Spot is a hurricane-like storm system at least twice the diameter of planet Earth. Approaching Jupiter in early October the Cassini spacecraft recorded the images used in this excellent movie of the swirling storm system and planet-circling cloud bands . ...