Giant red spot and Galilean satellites

Giant red spot and Galilean satellites

Fig. 2.12 . The edge of Jupiter with its Great Red Spot and on the same scale the planetís four largest moons, known as the Galilean satellites. From top to bottom the moons are Io, Europa, Ganymede and Callisto. Winds blow counter-clockwise around the Great Red Spot, which has been observed for more than 300 years and is larger than one Earth diameter. Europa is about the size of Earthís Moon, and Ganymede, the largest moon in the solar system, is bigger than the planet Mercury. (Courtesy of NASA/JPL.)

Copyright 2010, Professor Kenneth R. Lang, Tufts University