If it's really is about not harming "a single microbe", then the probes amd landers can't even land on the planet. they might squeeze an alien cat beneath the l

If it's really is about not harming "a single microbe", then the probes amd landers can't even land on the planet. they might squeeze an alien cat beneath the lander or burn everything with their thrusters. I can't imagine the scenery when you're an alien cat and you look up and out of nothing.. boing ... You're smashed. So if talking about the ethics, how the unintentional killing of possibly alien life is looked at? Intentional "for the science" is a little bit unethical, but we kill Gogols of Gogols at our place each second without even thinking of ethics. So, where's the difference to a possible microbean alien Life? And what will happen, if we suddenly really discover an alien cat? If it's smashed by the lander - is it ethical/unethical to take the probes of the alien hamburger? Is it ethical/unethical when the alien cat is not smashed, but caught. Just as a assumption, if there's a full grown alien cat pet keeper and you just smashed or caught and killed his pet? ..From the point of view of the pet keeper, is it ethical then? What if the pet keeper, unsuspiciously walking around, is suddenly smashed by the lander.. ethical? What about not smashing, but rather capturing?? I think there should just be a differentiation between fast reproduction and slow reproduction. We can't do anything about smashing or burning by the thrusters, but, if alien life is found, then its observed firstly for a period of time anyway. Here, in my thinking, the reproduction rate can be observed. If it's "fast" under some circumstances and if these circumstances are "often enough" to have constant "population", then ok - it's evolution. We can kill it for science. But, if the reproduction time is like of a Earth's whale or elephant, and even some social behavior can be observed, then highly problematic in my eyes. Ok. Say, we've discovered the alien cat. We don't kill it. We observe it until it die intentionally or unintentionally. Can we use the remainings? What, if there's a "mother" that grief? What if there's somehow a cult of living eating the dead and therefore no remains and no leftovers? This is a very shadowy part of science. At some point we need to do a killing. The most ethical one is smashing from above unintentionally.