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Cosmic Queries – The Biggest Ideas in the Universe with Sean Carroll
StarTalk Radio
The Early Universe Is Like a Nuclear Fusion Reactor
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The early universe is like a nuclear fusion reactor. It's turning hydrogen into helium and other elements by fusing them together. A few seconds after the big bang, nuclear fusion was going on. And we take the theories of physics that were devolved by us here on earth, with our tiny little brains in the past 100 years to make a prediction for how much helium there should be. We get it right. That just will never cease to amaze me.
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