That is correct. There is no evidence whatsoever of any life beyond earth, not microscopic, not complex, excepting that much debated meteorite. However, it seems possible, as a wild guess. Is there a Life on Mars pool?
My original training was as a scientist, even if I'm an engineer now. I learned a long time ago, to separate what is known, from what is unknown. It's an important distinction that a lot of people don't think to locate accurately. . .