Europe is one of the satellites that the planet Jupiter possesses, and it houses an underground ocean inside. A few years ago astronomers obtained new evidence that this ocean is not only composed of salt water, as it happens on Earth, and that the liquid escapes to the icy surface.
The moon Europa has a layer of 100 kilometers of water thickness, a part in the form of ice crust outside and another part as an ocean located below the surface, and both areas seem to communicate. The communication between both layers could be releasing energy that, in turn, would be fundamental to the possible existence of life.
According to Mike Brown, an astronomer at the California Institute of Technology, there is evidence that the ocean of Europe is not isolated. The water inside communicates with that of the surface, exchanging chemical elements. This means that there could be energy in the ocean, increasing the chances of life there. For the composition of the interior ocean, it is only necessary to scratch on the surface.
In Europe there could be microorganisms very similar to those of the earth, which would be grouped in some fumaroles at the bottom of the seas. The shortage of these fumaroles suggests that, if there were, the colonies of these microorganisms could not be very numerous or very large. In the case of complex life forms in Europe, they could not be larger than one gram of mass.
Brown and other astronomers' work on the composition of the moon Europe is one of the most complete to date. Studies have been made possible thanks to the data and photos that the Voyager and Galileo probes have been providing for years.