REWIND back to the ORIGINS of LIFE on planet Earth. Imagine the environmental conditions then.  What are your feelings about the possibility of  LIFE (as we know it) in other planets? When you look at a starry night and think about extra-terrestrial life (even in its most basic form), what OTHER forms of life could you imagine?  Can you envision some of those twinkling planets having living organisms? Is there a high probability of having similar life forms somewhere else in the universe? Would the same rules and mechanisms underlying EVOLUTION apply in other planets? why yes, why not.