There’s still a lot that we don’t know about UAPs. All jokes aside, there are academic programs in place that study this phenomena. I, personally, interviewed one of these academics and you can read it here: reddit.com/…/sebastian_oehme_answers_questions_re…
Nonhuman biologics on Mars or Europa? Discovery of the century (assuming they weren’t accidentally ferried up by a rover). But Earth? You have to go to a great deal of trouble to create a space without nonhuman biologics.