Astronomy Cast Ep. 751: Vacuum Energy

https://www.youtube.com/watch?v=xBJ4LBFxqb8


Streamed live on Apr 7, 2025.


Hosted by: Fraser Cain and Dr. Pamela L. Gay.


Even empty space isn’t empty. It’s filled with the quantum
fluctuations of spacetime itself. Which can be measured with
famous experiments like the Casimir Effect. There is a surprising
amount of energy in space itself, which has led to some
interesting theories about how the future of the Universe might
evolve. You can't get something from nothing but sometimes that
nothing is something you can get something from.


 


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