i read a book once on the possibilities of other life forms on planets, and it specualted that u could even get life in suns. wouldn't exactly be life as we can imagin it though. it takes the meaning of life as pattern that replicates itslef. on a sun though it would work as a pattern of charged plasma particles that replicate themselves. if u look at life like that, all kinds off strange possibilities occur, such as hydrogen based life forms existing on planets like pluto (although pluto apparently isn't a planet anymore) that absorb oppositely chaged hydrogne particles to release the energy nescessary to replicate and continue they're own existence. although i think that's what it said about them. not sure if u can get energy that way, cos it's a while since i read that book. as for life on mars though. you're only gonna get it in bacterial forms. unless those nuts saying u have a martian civilisation underground are true. but then they're nuts, so there u go.