for the visible
             surface of the atmosphere, to 9° F (-13° C) at lower cloud levels; localized regions reach
             as high as 40° F (4° C) at still lower cloud levels near the equator. Jupiter radiates about
             four times as much heat energy as it receives from the sun, suggesting an internal heat
             source. This energy is thought to be due in part to a slow contraction of the planet. Jupiter
             is also characterized by intense non-thermal radio emission; in the 15-m range it is the
             Jupiter has a simple ring system that is composed of an inner halo, a main ring
             and a Gossamer ring. To the Voyager spacecraft, the Gossamer ring appeared to be a
             single ring, but Galileo imagery provided the unexpected discovery that Gossamer is
             really two rings. One ring is embedded within the other. The rings are very tenuous and
             are composed of dust particles kicked up as interplanetary meteoroids sma
             ...