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PBS Space Time
Is Our Model of Dark Energy Wrong? | New 4.2σ Results
Season 11
Episode 5
The biggest news in cosmology in recent years is that the mysterious universe-accelerating entity we call dark energy may be fading away. The evidence for this is now strong enough that enormous effort is going into confirming this result. So what’s it going to take, and when are we going to know?
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16:36
The universe should've collapsed after the Big Bang, but a light Higgs boson let us exist.

14:30
Maybe dark energy doesn't exist?

18:32
Dark matter has eluded us for many decades but we may be able to discover more now.

15:35
What do you get if you combine something that’s infinitely massive and negative infinitely massive?

13:39
What does an electron really look like?

16:35
Is there a limit to how much energy you can cram into, or pull out of one patch of space?

17:19
I’d like to invite you to an even higher level of nerdom!

11:43
Gravitational tsunamis exist and we’re on the verge of being able to detect them.

18:40
Will we ever become a Kardeshev Type-1 civilization and how can we get there?

14:05
New data is telling us that Neutron stars may make one of the most popular dark matter candidates.

15:14
Is Dark Energy Getting Weaker?

16:08
Here’s the story we like to tell about the beginning of the universe.