Who have learned these things? Where is the evidence of anything he is talking about? I have learned the same in college, however I categorized it ALL as theory because there is NO scientific proof. This old man sit here an spouts science fiction and No One says anything? There are NO pictures of the earth and we know the universe was created 13 billion year through a big bang? That is BIG BS. Any real pictures or JUST CGI? interesting conversation but it is just talk. With all of earth's problems, they can talk with certainty about the universe when we have only left low orbit. No one has even been to the moon!