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PBS Space Time

Does Timescapes Disprove Dark Energy?

Season 10 Episode 32

The universe is expanding and that expansion is accelerating under the power of dark energy and eventually all matter and energy will be dispersed over such unthinkable distances that nothing can stop space from blowing up infinitely. Unless of course cosmologists blundered and dark energy doesn't even exist. Then it's back to the drawing board.

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There’s a hard limit to humanity’s expansion in the universe. So, how big can we get?
How Much Of The Universe Can Humanity Ever See?
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Let’s figure out the absolute limit of our future view of the universe!
What If Black Holes Are Dark Energy?
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Let see if Black Holes and Dark Energy are the same thing!
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Physics is the business of figuring out the structure of the world. So are our brains.
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Does the next level of physics require us to do away with space and time?
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Nuclei are held together by a quirk of nature, without which there’d be nothing.
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Your motion through the universe is extremely complicated, so let’s figure it out!
What If Alien Life Were Silcon-Based?
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Could there silicon-based life beyond Earth?
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If you believe the Mathematical Universe Hypothesis then yes. And so are you.
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Learn more about the time when the moon didn’t exist, and then hours later suddenly did.
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We explore Supercritical Fluids and how being "in the between" is their superpower.
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These are particles you may not even heard of!
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