Europa is the second Galilean moon of Jupiter. It is slightly smaller than Earth’s moon and has a much different composition. The surface of Europa is made of ice, covered with fractures and frozen icebergs. The fractures are surrounded by a sulfurous material that appear to have leaked out its core. Due to orbital resonance with Io and Ganymede, Europa experiences tidal heating of its interior. Together with the discovery of an induced magnetic field around the moon, there is strong evidence that Europa has a subsurface ocean of liquid water. This makes Europa one of the most likely places in our solar system to look for life.