and a cowKhan bites at you ! <| sep |> You think someone would do that ? Just go on the Internet and tell lies ? <| sep |> That ' s certainly a possibility . The Mars science community has slowly been focusing more on a deep biosphere , one where life can live in the subsurface without direct interactions with the Sun . For example , in mines deep within the continents we find microbial communities that live off chemical reactions with the rocks . No photosynthesizing . In areas in the subsurface of Mars such as this deposit , all the ingredients are there to support these types of communities . At the base of the ice the geothermal gradient or radioactive decay may keep the temperatures high enough to keep the water liquid , providing a habitat for life .