Model based on hydrothermal sources evaluate possibility of life Jupiter`s icy moon
(PHYSorg.com Space & Earth)

Jupiter`s icy moon Europa is a major target of astrobiology research as it offers a possible habitable environment. Under its 10 km-thick icy crust is an ocean of liquid water over 100 km deep. Energy deriving from the moon`s gravitational interaction with Jupiter keeps this ocean warm.