Why UFOs can't fly to Earth
21:16
YouTubeProf Simon - Science Filmmaker
Why UFOs can't fly to Earth
Why the Enormous Size of the Universe Makes Alien Visitors in Spaceships Unlikely Ever wondered why we’ve never seen clear evidence of extraterrestrial visitors in spaceships despite billions of potentially habitable planets? The enormous size of the universe makes traditional alien spacecraft arrivals highly improbable. Spanning 93 billion ...
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