Europa:

Europa is a moon of Jupiter, and is ranked number six in the list of the largest moons in our solar system. The moon is completely covered by a layer of ice with a thickness of ten to thirty kilometers. Under this layer is a liquid ocean of salt water with a depth of around one hundred kilometers.

Ganymede:

Ganymede is one of the four largest moons of Jupiter, the largest planet in the solar system. It's a big moon, consisting of rock and metal with a thick crust of ice filled craters. Ganymede is about as old as our own moon and the crust floats probably a viscous surface just like Earth. Therefore, this moon away from the Earth than with other planets in the solar system. In the rarefied atmosphere of oxygen present.

Io:

Io is especially interesting because of its volcanic activity: it is the most volcanically active object in the solar system, making it the sun and Venus after also the hottest place in the solar system. Unlike volcanoes on Earth, volcanoes on Io sulfur or possibly sulfur spewing out.

Callisto:

Callisto is the moon with the most impact craters of the solar system. Actually, the impact craters and associated concentric rings about the only visible geological structures, for large volcanoes are not present. This undoubtedly has to do with the ice structure of the moon, craters and mountains, however great, will be simply wiped again moving the icy crust over geological time.

Titan:

On this basis, it is suspected that Titan for about half frozen water and ammonia exists. Probably located under the surface an ocean of liquid water and ammonia, which in principle could be possible. Any form of life The surface itself is geologically young and is covered with ice from hydrocarbons.

Can u find Sunny?:

She's in the car haha: