@Berin First off thanks, your comment made me research a bit more, and I was able to find this; some theories about alternative life-forms I agree with you, at our level of understanding. We cant, prove, that life other than carbon-based, can exist. But, our understanding of the universe, is yet on questionable levels. No matter, how many bold claims we make, end of the day, we are clueless as to what is going on. And like @spaceboy mentioned (I highly recommend you read his comments, he made some solid points), anything can be a type of life-form. But our limited grasp of reality, always makes us think otherwise.