Quantum particles exist in space-time, but quanta of gravity are different - they are woven together to make space time itself.
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In this short clip from his talk on the Physics and Philosophy of Time, theoretical physicist Carlo Rovelli explains loop quantum gravity, and how space-time is woven together from quanta of gravity, much like how a t-shirt is knitted together from a cotton thread.
Watch the full talk: https://www.youtube.com/watch?v=-6rWqJhDv7M
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