2 miles)." (Seeds) These values were
             established by the timing of the occultation of the spacecraft by Jupiter. Thus, Jupiter is
             nearly 20 times more fattened than Earth, principally because of its non-solid state and its
             higher rate of rotation. The average density of Jupiter, calculated from its mass and
             volume, was confirmed as 1.33 gm/cm^3 (the density of water is 1).
             The atmosphere of Jupiter is composed mainly of hydrogen, helium, methane, and
             ammonia. "It appears the atmosphere is divided into a number of light and dark bands
             parallel to its equator and shows a range of complex features, including an ongoing storm
             called the Great Red Spot, located in its southern hemisphere and measuring 16,150 mi
             long by 8,700 mi wide (26,000 by 14,000 km)." (Columbia)
             This Great Red Spot is still present in Jupiter's atmosphere, more than 300 years
             later. It is now known that it is a vast storm, spinning like a cyclone. Unlike a low-
             pressure hurricane in the Caribbean Sea, however, the Red Spot rotates in a
             counterclockwise direction in the southern hemisphere, showing that it is a high-pressure
             system. "Winds inside this Jovian storm reach speeds of about 270 mph. The Red Spot is
             the largest known storm in the Solar System. With a diameter of 15,400 miles, it is
             almost twice the size of the entire Earth and one-sixth the diameter of Jupiter itself."
             (Fimmel) The Great Red Spot was first detected by Robert Hooke in 1664.
             Jupiter has no solid rock surface. One theory pictures a gradual transition from the
             outer ammonia clouds to a thick layer of frozen gases and finally to a liquid or solid
             hydrogen mantle. "The Spot and other markings of the atmosphere also provide evidence
             for Jupiter's rapid rotation, which has a period of about 9 hr 55 min. This rotation causes
             a polar flattening of over 6%." (Columbia)
             The temperature of Jupiter ranges from about -190° F (-124°C)...