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\nHow Many Universes Are There?\n

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\n\nPublisher:\n\nPBS\n\n\n
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\nThe universe is big, but it’s peanuts compared to the eternally inflating multiverse. But just how many universes are there? What are they like? And most importantly, what can they tell us about … aliens?Imagine it: the observable part...\nThe universe is big, but it’s peanuts compared to the eternally inflating multiverse. But just how many universes are there? What are they like? And most importantly, what can they tell us about … aliens?
Imagine it: the observable part of our universe is 93 billion light years across, and that’s just a small fraction of the stuff created in our Big Bang. But in the eternal inflation picture, ours is just one among uncountable bubble universes. Bubbles that are continuously appearing and growing within a vastly larger spacetime that itself expands at an exponentially accelerating rate. A greater inflationary spacetime whose expansion never ends. We looked at the bizarre idea of eternal inflation in recent episodes – but we stopped short of exploring the full implications of this proposition. Those implications are, frankly, completely nuts. Some may also be true.\n
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Resource Details

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Curator Rating
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Educator Rating
Not yet Rated
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Media Length
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14:03
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Grade
12th - Higher Ed
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Subjects
Science
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Media Type
Instructional Videos
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Source:
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\nPBS Space Time\n\n
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Date
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2019
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Language
English
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Audiences
For Teacher Use
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Usage Permissions
Fine Print: Educational Use
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Concepts

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space, quantum mechanics, time, energy, expansion, bubbles, volume, dimensions, black holes, outer space, astrobiology, the universe, science fiction
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Additional Tags

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physics, astrophysics, space physics, pbs, space time, pbs space time, matt o’dowd, einstein, einsteinian physics, general relativity, special relativity, dark energy, dark matter, math, calculus, maths, holographic universe, holographic principle, holography, holographs, reality, consciousness, eht black hole, event horizon telescope, big bang, inflaton field, photon field, exponential nature, cosmological constant, anthropic principle, eternal inflation, challenge question, scale factor, inflating universe, inflating space, bubble universes, volume increase, bubble, factor, question, universes, vacuum, universe, true, large, idea
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Classroom Considerations

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Video is ad-free
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