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A theory that describes how matter interacts dynamically with the geometry of space and time. It was first published by Einstein in 1915 and is currently used to study the structure and evolution of the universe, as well as having practical applications like GPS.

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Energy momentum tensor for a uniform spherical mass in general relativity

As Jerry said, outside of the mass the energy-momentum tensor is zero. As our mass is uniform and at rest, and assuming no stress or internal pressures, the only nonzero component of $T^{\mu\nu}$ insi …
Eric R. Anschuetz's user avatar