This "family portrait" shows a compilation of images of Jupiter, including its Great Red Spot, and its four largest moons (from top: Io, Europa, Ganymede and Callisto). Europa is almost as big as Earth's moon. Image credit: NASA/JPL/DLR
This image is part of: Jupiter moon mission: Searching for oceans with technology from Braunschweig. Please note the copyright of this image.