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What If the Cosmological Constant Is Not Constant?

Season 10 Episode 23 | 15m 14s

We know that the universe is getting bigger. And we know that the speed that the universe is getting bigger is also getting bigger. The standard assumption is that the acceleration rate is itself constant, which will result in ultimate heat death. But a recent survey of primordial sound waves frozen into the way galaxies are sprinkled through the universe reveals that this fate is now in question.

Aired: 10/09/24
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What does an electron really look like?
Is there a limit to how much energy you can cram into, or pull out of one patch of space?
I’d like to invite you to an even higher level of nerdom!
Gravitational tsunamis exist and we’re on the verge of being able to detect them.
Will we ever become a Kardeshev Type-1 civilization and how can we get there?
New data is telling us that Neutron stars may make one of the most popular dark matter candidates.
Here’s the story we like to tell about the beginning of the universe.
We’ve never seen a TDE in the Milky Way, but we’ve seen them in distant galaxies.
Let’s talk about quantum gravity experiments that can be done here on Earth!