Europan Water

Researchers have theorized for years that Jupiter's moon Europa may have a huge ocean of liquid water under the shell of ice that completely covers the surface. Some researchers now say there might be lakes, as well.

The lakes of liquid water would exist above the ocean, within the outer ice shell. The lakes would serve as a system linking the water in the ocean with the surface, providing a way to replenish the ice of the shell while also allowing energy from outside to reach the ocean. Such an exchange system could increase the possibility that life could exists inside the moon.