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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
Did you know that many of us have up to 4% neanderthal DNA?
What if the Big Bang was just an endless cycle?
Why are billions suddenly being pumped into fusion startups?
The universe should've collapsed after the Big Bang, but a light Higgs boson let us exist.
Maybe dark energy doesn't exist?
Dark matter has eluded us for many decades but we may be able to discover more now.
What do you get if you combine something that’s infinitely massive and negative infinitely massive?
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!