Figure 13-2: R I V U X G
Io and Europa from Voyager 1 Voyager 1 recorded this image of Jupiter and the Galilean satellites Io and Europa in February 1979, when it was 20 million kilometers (12.4 million miles) from the giant planet. The satellites are actually smaller than some of Jupiter’s cloud features, such as the Great Red Spot (see Section 12-3). Voyager 1 and Voyager 2 also recorded many images of the Galilean satellites at closer range.
(NASA/JPL)