Looking at the Einstein equation, stresses can cause a deformation of space time.(adsbygoogle = window.adsbygoogle || []).push({});

This link here

https://twitter.com/anilananth/status/339030628181868544

gives a value for the elastic modulus ("stiffness") of spacetime.

I think that the value of 10^24GPa must be related to Einstein's constant 8 pi G/c^4 - I suspect that one uses the equations for a small perturbation of flat spacetime (as Misner Thorne Wheeler, eq. 18.8b) to calculate this, but I don't see how it is done exactly.

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# Stiffness of space

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