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Old January 20 2013, 10:31 PM   #12
Asbo Zaprudder
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Re: Basic Science Question - "fabric" of space

General Relativity doesn't explain why gravitational mass curves space-time. It just describes how to calculate the effect based on a set of assumptions about how energy-momentum and space-time interact. Energy and momentum are seemingly joined at the hip just like space and time. Background-independent string theory or loop quantum gravity might eventually offer an insight why the Universe is the way it is, but they haven't as yet.
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