Alan Guth - How Vast is the Cosmos?

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Everyone knows that the universe is huge, but no one could have imagined how staggeringly immense the universe, or multiple universes, may actually be. It stops your breath. How to get a measure of the size of the cosmos? What would it mean if the cosmos were literally infinite?

Видео Alan Guth - How Vast is the Cosmos? канала Closer To Truth