In this episode I take a deep dive into the size of the universe. I go over the numbers regarding how big it really is. Once the size is established I continue with the age of the universe and answer the question, are we alone. A couple clarifications: our solar system is 0.0025 light years across, not 0.25 like I said. I meant to say 0.25%. And there are 10,000 suns per grains of sand, not 100,000. Oops

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