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Originally posted by flexy123
This is in particular because there is a common belief that MAYBE Mars once had life millions or maybe billions of years ago.
Now let's just assume this being the case..and for the sake of debate we could also assume that we had a "high tech" civilization many millions of years ago on Earth..
What...if at all...would remain for us to "find"? Would everything be gone, withered away? Would structures survive millions...possible billions (!) of years?
WHERE (if at all)..could we find hints and remains? Mind you...such numbers are mind-boggling. Homo Sapiens is said to appeared only 200.000 years ago in Africa. So we'd be dealing with a "civilization" BEFORE man..before science..before history really. Man would (probably) not know anything about this.
The other question..simply in regards to "weather" (sand, wind etc..which also exists on other planets) whether it would wipe out anything within millions of years.
(By the way..thinking about it...i *think* if such would be the case..the only "evidence" we could find would be within stone...that some "artifacts" or similar are being found encased in stone...)edit on 21-12-2011 by flexy123 because: (no reason given)