From Sabine Hossenfelder.

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Correction to what I say at 1:42 — it happens at the speed of light, not faster than light, sorry about that. No idea what I was thinking.

What is empty space? In this video I summarize what physics tells us about this. What really are virtual particles? What do they have to do with the vacuum energy and can we extract this energy?

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#science #physics #space