You think every fall of a civilisation will be followed by rise of a new one? Maybe. But what I'm suggesting (as a hypothesis) is that every rise of...
Yes and it's understood that some SO2 in the atmosphere of Venus does get oxidised to SO3 and H2SO4. The limiting factor is low level of atmospheric...
The Great Filter (the factor that has prevented the Galaxy from being colonised) may be that galaxies are less tameable-by-technology than theorists...
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