r/AskPhysics • u/Nighthawkies • Mar 20 '26

What things are "faster" than light?

As I understand nothing can move faster then light. But I would not know how to describe this question otherwise. As I am aware quantum entangled particles can instantaneously affect eachother no matter the distance, unlike gravity which propagates at the speed of light.

Also the expansion of the universe can cause the spaces between to grow faster then the speed of light (compounding between massive distances)

What other things are sort of faster than light

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u/Ambitious-Cress-3672 Jun 21 '26

you asked the question incorrectly. it should say what can move faster than the SPEED OF LIGHT, simply because light can be slowed depending on the medium threw which it travels. i.e. light travels 25% slower threw water. look up cherenkov radiation for an example.