No. The early pre-photosynthetic Earth was not full of oxygen, it had a reducing atmosphere. You don’t have hydrogen and oxygen kicking around over geological timescales without energy input. I have already tried explaining the basic thermodynamics problem here multiple times, and bowed out because people weren’t listening and it’s frustrating, and you’re still not.
If it turns out the ocean isn’t isolated from the surface like jerwin’s link proposed, that’s a real answer. The manganese nodules that were mentioned twice are only an answer if there’s something recharging them, which is kind of the whole question. Invoking early Earth life despite the fundamentally different situation and saying “life finds a way” as if it doesn’t need to obey physics is no answer at all, just failing to acknowledge the problem in the first place. Could people please stop repeating them to me like they’re some brilliant new insight? I’ll try not to make the mistake of troubling you with things I don’t understand here again.
No. You don’t get usable energy just from the environment being warm. I already mentioned tidal heating as a non-answer in my second post. Why are you still telling me about it like it’s something I’ve never heard of? I’ve already asked people to stop, but I guess I am going to be told obvious things I already know for the next two days regardless, huh?
Hey, has anyone ever heard of these things called cats? I assume not, but they’re living things that don’t get scurvy because they make their own vitamin C. If someone magically fixes all the other difficulties, maybe that would be a good model for how life could exist on Europa despite the absence of fresh orange juice!
You mean heat driving geochemical processes, like mentioned here?
You just keep invoking the magic of “geochemical processes” without the slightest interest in what and how, no matter how many times I explain that’s literally all the details I was asking about. And you keep re-explaining the very things that have already been mentioned – to the point of posting an article on the exact same thing gundoit did, without acknowledging them! You wouldn’t do that if you were listening. And it’s frustrating, and I am trying very hard to say I’ve had enough, so good day already.
The proposed solution is that the oxidising agent is oxygen. In this case, particles in Jupiter’s radiation belts split apart water molecules in Europa’s surface ice. The hydrogen is lost to space, but the oxygen could weakly bind to ice molecules. The quantities of oxygen appear to be limited though:
