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The Importance of Observation in Astronomy
Brian Keating: How many galaxies do you hold in your mind as the current number? I remember sort of an average of 100 billion stars per galaxy. And then it was like at one point it was 100 billion galaxies in the universe and then it was a trillion, then it heard as many as 20 trillion. If you go to my website, Peter, Brian Keating.com, I will let you buy me, buy a universe from me in the multiverse.