You still have one speed of light, that’s the Lorentz transformation
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DmMacniel@feddit.org 1 day ago
Well duh. When a thing moves away from another thing, that is moving at the speed of light, at the speed of light, you have speed of light time two!
OrganicMustard@lemmy.world 1 day ago
TheTechnician27@lemmy.world 1 day ago
This explanation is the wrong intuition for why space can expand FtL. It’s an understandable one to infer, but the balloon one further down is correct and the one most commonly used by cosmologists for a lay audience.
Our current understanding of cosmological expansion works by Hubble’s law, and that equation puts no such 2x cap on the recession speed.