Big BIG BIG difference between a scientologist and a SETI researcher. Scientology is a cult that basically wants to take your mind, money and soul, all built on a nonsensical science fiction writer's stupid fantasy. SETI is just a bunch of scientists who want to find life in outer space.
Though I don't think SETI has a chance in hell of finding a true signal in outer space, I don't knock them for trying.
Maybe Xenu will answer. He has as good a chance as any other space being.