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I wonder if there'd be any good way to confirm or rule out an ancient Martian civilization. Would Martian surface structures be able to last a few billion years
by dan_mctree 2y ago
I wonder if there'd be any good way to confirm or rule out an ancient Martian civilization. Would Martian surface structures be able to last a few billion years? Or would Martian processes be able to make all of them disappear? And how about underground structures?
- ethbr1 2y agoI read somewhere that for geologic-scale signatures you need something that is: - Chemically inert - Recognizably artificial w/o context - Physically hardy - Planet-scale mass-produced On Earth, apparently "panes of glass" are one of the few things that qualifies.