I like the cover picture. It looks pretty accurate (except for what appears to be a lake, of course) to photos sent back by spacecraft currently in orbit. Of course, who knows what's really going on there? There's been gullies and other features that look like they might have been carved by liquid water in the recent past -- and I do mean recent, not just geologically so.
Bacterial contamination is certainly an interesting theory, although if there's a Martian race in the present day, there wouldn't have been enough time for microorganisms to evolve intelligence, at least as we currently understand things. (In Earth's billions of years, multicellular life has only existed for a few "instants" on the earth's 24-hour clock.)
All spacecraft sent to the surface are sterilized against the possibility of accidental contamination that could skew future results or contaminate the planet, too, so it's highly unlikely for that to be a source. I wonder if those wizardly "bubbles" of air are also sterilized ...
Bacterial contamination is certainly an interesting theory, although if there's a Martian race in the present day, there wouldn't have been enough time for microorganisms to evolve intelligence, at least as we currently understand things. (In Earth's billions of years, multicellular life has only existed for a few "instants" on the earth's 24-hour clock.)
All spacecraft sent to the surface are sterilized against the possibility of accidental contamination that could skew future results or contaminate the planet, too, so it's highly unlikely for that to be a source. I wonder if those wizardly "bubbles" of air are also sterilized ...
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