What an amazing ...
set of hypothetical 'what-ifs' ... based on asking the imponderable question and then supplying a hypothetical answer.
Did space aliens really supply the technology to build the pyramids?
Was Atlantis truly the capital of super-beings who were lost in the cataclysm?
Did ancient objects smite the Earth and extinguish the dinosaurs because our solar system fluttered across a cosmic tennis court?
Some day inquiring minds may supply the answer. Meanwhile, it's jolly good fun to guess.