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Roger Penrose, “The Cyclic Universe” (Open Agenda, 2021)

New Books in Science, Technology, and Society

00:00

Is There a Major Effect in the Temperature Variations?

There is evidence that in the early universe it was a little bit wa a bit more of dark matter than there is now. Dark matter would still be there even if it was massless, he says. The effect will look like almost an impulsive effect, but spread out because it's got to work its way through this initial material. But on the small scale, when you're looking at these little ripples, since this impulse here, we're talking about more or less instantaneous, it's a real big bang.

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