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Scientists have proposed a way to see the quantum nature of gravity through the entanglement of a photon and a rotating mirror.
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Quantum gravity can entangle light and a rotating object. The direction of rotation changes the strength of their invisible bond. Such an experiment will one day test what building blocks gravity is made of—graviton particles.
🎯 A single graviton is so weak that to detect it, you'd have to build a detector the size of Jupiter.