What is space time fabric?
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“Fabric” is poetic phrasing often used to create analogies for introducing new physical concepts, specifically regarding gravity. With every analogy there comes unfortunate confusion, such as the idea that the fabric can “tear”.
Spacetime is not literally a fabric. And spacetime itself doesn’t even literally exist in the same way that you and I exist. It is purely a structural quality we use to describe gravitational fields.
In physics the mathematics is all we have to perfectly describe reality. When we start trying to describe it using the English language, things get fuzzy. But I doubt a mathematical equation would explain a lot to most people.
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