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.

Overview Seasons Similar

Created By
Status	Returning Series
Original Name	PBS Space Time
First Air Date	February 11, 2015
Last Air Date	May 29, 2025
Seasons	12
Episodes	409
Episode Runtime	0min
Language	English
Original Language	English
Production Countries	United States of America
Production Companies	PBS Digital Studios Kornhaber Brown
Networks	YouTube

S2025E13

The Crisis In Physics: Are We Missing 17 Layers of Reality?

Big things are made of smaller things, and those smaller things are made of smaller things still. That’s reductionism in a nutshell, and digging our way to the smallest layer has been one of the primary goals of physics for ever. But what if, just before we reach the bottom, we find out that reductionism fails?

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