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The article indicated that surface turnover could have removed that evidence.
by SubiculumCode 3y ago
The article indicated that surface turnover could have removed that evidence.
- Mountain_Skies 3y agoIf that were the case, perhaps someday we will find evidence on the Moon or elsewhere in the Solar System that an earlier civilization achieved space flight before they were erased from Earth and unable to establish a permanent foothold elsewhere in our corner of the cosmos. The Moon and other celestial bodies in the Solar System of course have their own processes that erase the surface over time, but at least with the Moon, it does appear to be a far slower process.
- topspin 3y agoAnd yet we have 3.4 billion year old cyanobacteria fossils.
- newZWhoDis 3y agoVarious sci-fi has explored this idea, for example Mass Effect, but “Reaper” species could explain that.
- topspin 3y agoAlso aliens. I see.
- zen928 3y agoyep. these kind of thought experiments are cute but it's so easy to just immediately dismiss bad science that wants to ignore historical record to write paragraphs of fanfiction the main crux of these arguments always depends on how it's hard to prove something didn't happen without exact historical evidence for every single organism in every single recorded geologic period, which is a terminating thought to actually holding a rational conversation. OK, cool, then we also: live in a simulation, are observed by aliens or influenced by aliens, move to alternate realities every time we sleep, etc. wow, so "interesting"!!