# Spacetime "curvature factor" by a specific mass

jparth
Is there an attribute of spacetime that determines the curvature that will be caused by a specific mass thus resulting to the corresponding gravity?
In other words: can there be "harder" or "softer" regions of spacetime where the same mass will bend spacetime less or more thus resulting to less or more gravity?

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No. Space-time curvature is governed by the Einstein equations, which are the same everywhere.

Mentor
Can there be? Yes, there could. We haven't observed the behavior of every single region of spacetime in the entire history of the universe, so we cannot definitively say that no region of spacetime behaves that way.

Are there? We've observed gravitational phenomena from the scale of small objects on earth (google for "Eotvos" and "Pound-Rebka") all the way up to the motion of galactic clusters and we have not found the tiniest trace of such an effect. Furthermore, our best current theories (quantum mechanics and general relativity) don't give us any reason to expect to find such a thing.