Alien life could possibly exist on the undersides of the frosty shells of Jupiter’s moon, Europa, and other solidified worlds, on account of the crossing point of some chemical energy ascending from hydrothermal vents on the sea depths and oxidants dissolving down from the surface.
The hydrothermal vents
Global seas exist, but they are covered up underneath the icy outside layers of the bodies, for example, Jupiter’s moons Europa, Ganymede and Callisto, and Enceladus and Titan, which are Saturn’s moons. Not at all like Earth’s seas, which are warmed from above by the sunlight, these huge water bodies are likely warmed from underneath hydrothermal vents, which are found on the bottom of the seas.
One possible source of the key building pieces of life in these concealed seas could be the chemical reactions between the seawater and the ocean bottom or the hydrothermal vents. The warmth from hydrothermal vents would boil these waters, rearranging organisms and nutrients upward.
Oxidants to help the icy surfaces of these moons?
In the meantime, high-energy electrons shelling the icy surfaces of these solidified worlds, from their adjacent big planets, would create some chemicals called oxidants, which could enable life forms to make the most out of fuel particles, similarly as oxygen helps life on Earth burn nutrients for energy. The boiling of the icy crusts could convey these oxidants into the shrouded seas.
Michael Russell, who is an Astrobiologist at NASA’s Jet Propulsion Laboratory, which is located in Pasadena, California, and his partners recommend that where an icy outside layer and a shrouded sea meet in a solidified world, like Europa, these two sources of the building pieces of life could combine and conceivably bolster the advancement of life. At the underside of Europa’s icy outside layer, they recommend a shallow biosphere.