[bannie]

I watched Star Trek. Not all lives are carbon based.

:-)

[Skywalk]

"You are ugly bags of mostly water."

[furball4paws]

People like to speculate about Si based life forms and even throw around S, B and Ge. However, the chemistry of these elements makes then very unlikely as a basis for life. Carbon is the only element that forms complex stable molecules and easily forms compounds with heteroatoms (N, O, P, S, Se, Fe, Mn, Co, Zn, Ni, Mo, W and even Cl, Br and I. These are required to get a great enough variety for the many chemical reactions required for living systems.

We might find non-DNA/RNA based life and even life forms that do not make or contain lipids, carbohydrates or proteins, but it is extremely unlikely to find non carbon based life.

Since most stars probably have planetay systems, the chance that there is life out there is extremely high, the probability is probably 1.0. I would be glad to be it is carbon based and I would be happy to bet it won't look like me (egad, I hope it won't).