I'd say I'm almost 100% certain that life exists somewhere else. By life, I mean something that self replicates, has a code for such (DNA or RNA or similar), and uses energy from it's surroundings to survive, whether it be light, heat, etc.
Now, intelligent life is a totally different story. I feel like there probably is. It could be life that has the intelligence of a fish, or life that greatly exceeds our intelligence. No way to know till they visit or we find them
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