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Science02:57

BREAKING the laws of physics!

Physics Girl ↗

From the creator

When light passes through the universe and is redshifted by the expansion of space itself, how is energy conserved? The stretched light has a longer wavelength and therefore a lower energy. Is energy conserved? If so, where does it go? Support Physics Girl videos → https://www.patreon.com/physicsgirl http://physicsgirl.org/ http://twitter.com/thephysicsgirl http://facebook.com/thephysicsgirl http://instagram.com/thephysicsgirl Creator/Host: Dianna Cowern Editor: Levi Butner

Published 2026-04-03 · Watch on YouTube ↗
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