It could definitely be possible. We can't be the only planet in the entire universe with oxygen and water!
this way of thinking is where it goes wrong!
who says life needs oxygen and water?
?
even on earth there have been found bacteria in places no one would think life could exist!
heel, there are even found new species here on earth once in a while!
science is very narrowminded..... and remember science often is wrong!
some 600 years ago science still thought the earth was flat!
and to think that we are the only planet with life , is just plain ignorant and arrogant.
the universe is huge! and just because we can't see it or find it, does not mean life on other planets doesn't exist.
funny that a lot of people have a problem believing that life exists in other places, but have no problem believing in a god they have never seen, and for which exist NO scientific evidence.....
science is great, but like us ever evolving and many times very very wrong!