What Is Spacetime? The Deepest Mystery in Physics | From Einstein to Quantum Gravity
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YouTubeBig Black Cosmos
What Is Spacetime? The Deepest Mystery in Physics | From Einstein to Quantum Gravity
You're sitting on it right now. We navigate through it. We've photographed its ripples and measured its curvature. GPS doesn't work without it. We know how it behaves. We can calculate with it to extraordinary precision. We have equations that describe it better than any other theory in physics. And we have no idea what it actually is. This is ...
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