do you believe there's life on other planets?

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the universe is according to science is infinite. it doesn't have ending. (but philosophists, theologians say that it is finite) and the universe has a very very wide (beyond anyone's imagination) space. i could not be sure about it but i sometimes thought that our solar system is not only one, cause with the unimaginable size of the universe, there's probably more other systems. so now my question is that. do you believe there's life on other planets? i think i do, but not for suited for us humans.