>>16902396
>spacetime is always moving into matter. In fact you can image it as matter eating up space time
Then there should be some kind of direct conversion factor from mass to spacetime where x kilograms = y meters * z seconds, but they seem to be three completely distinct physical phenomenon with unique metric units.
On the other hand matter is currently understood to result from particle pair creation and to be obliterated through particle/antiparticle annihilation while space and time are infinitely scalable fields with no known mechanism to create or destroy units of space or time, only to have the energy, momentum, and charge of a closed space to be conserved over time.

https://youtu.be/JqNg819PiZY?t=40m