The large red spot is a storm in the jovian atmosphere. The Great Red Spot was first observed by Galileo in 1610. Voyager 1 took this photograph of the Great Red Spot in March 1979, only a few days before the spacecraft made its closest approach to the planet. Europa Voyager 2 got the best views of Europa, the next Galilean satellite beyond the orbit of Io, during its flyby through the Jupiter system in July 1979. Europa has a bright surface that spectroscopic studies show consists of water ice.
Bright frost is present at both polar regions.
The most distinguishing feature of the sixth planet from the Sun is the spectacular ring system in the equatorial plane of Saturn. This image was taken by Voyager 1. The image clearly shows the ring system surrounding a gaseous planet 9.5 times the diameter of Earth. This perspective, of crescent Saturn casting its shadow on the rings, cannot be seen from Earth. This slide is an example of some of the amazing complexity that is evident in the photographs of the rings.