PBS Space Time
Documentary
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PBS Space Time

Space Time explores the outer reaches of space, the craziness of astrophysics, the possibilities of sci-fi, and anything else you can think of beyond Planet Earth with our astrophysicist host: Matthew O’Dowd.

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Created By

Status

Returning Series

Original Name

PBS Space Time

First Air Date

February 11, 2015

Last Air Date

September 26, 2024

Seasons

11

Episodes

389

Language

English

Production Companies

Networks

YouTube

S2024E26

What If The Cosmological Constant Is NOT Constant?

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 surely 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.

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