General Discussion
In reply to the discussion: Does the Big Bang breakthrough offer proof of God? [View all]NuclearDem
(16,184 posts)Water is not essential for all life to exist or evolve. Water is essential for life that developed on Earth because organisms that mutated to incorporate water as part of their structure were environmentally selected to survive.
You're conflating origins of life with evolution, just like with origins of the universe and the Big Bang. Evolution as a theory is used to explain once life began, how it has changed due to selective environmental pressures.
Any environment can facilitate the development of life if the organism or foundations of a form of life can reproduce given that system's environmental pressures. Searching for evidence of water in the universe makes it easier for us to identify potential life because it's within the framework of what we know about life on Earth that incorporated water.
Mars could very well have had life at some point. It could have had the "seeds" of life planted on it through any number of means, and that life could have reproduced given Mars' environment and then went extinct as the environment changed, or it could have been dead on arrival when it couldn't adapt to the environment from the start.
There are no holes in evolution. The only holes people point out are completely irrelevant to the theory. Evolution sets out to explain something--how life responds to environmental pressures and whether or not it will successfully reproduce--and it does it perfectly.