If this was true, is there ANY chance there was once ANY kind of civilization that could be COMPLETELY covered now?
I have NO IDEA. That’s why i’m asking. :)
No one would have believed in the last years of the nineteenth century that this world was being watched keenly and closely by intelligences greater than man’s and yet as mortal as his own; that as men busied themselves about their various concerns they were scrutinised and studied, perhaps almost as narrowly as a man with a microscope might scrutinise the transient creatures that swarm and multiply in a drop of water. With infinite complacency men went to and fro over this globe about their little affairs, serene in their assurance of their empire over matter.
If this was true, is there ANY chance there was once ANY kind of civilization that could be COMPLETELY covered now?
Check youtube ,some people think they see see Life Everywhere
Doubt it. The period in which Mars would have been habitable was shorter than it has been on earth, and considering civilisation on earth has only existed for about 4,000 of the last 4 billion years or so it is highly unlikely civilisation had chance to develop.