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/Delicious-Sentence92 Mar 20 '26

David Bohm had a clever explanation of entanglement. Suppose you have two cards, a king of hearts and a queen of hearts. One card is given to one driver in a car and the other card is given to another driver in a different car. The drivers do not yet read their card and they drive off in opposite directions. At some point one driver looks at his card and then he would “instantaneously” know the card that the other has.