Energy conservation is a consequence of time-translation symmetry (by Noether’s theorem), which is broken in general relativity. Hence, broadly speaking, energy

Energy conservation is a consequence of time-translation symmetry (by Noether’s theorem), which is broken in general relativity. Hence, broadly speaking, energy is not conserved in general relativity. https://www.preposterousuniverse.com/blog/2010/02/22/energy-is-not-conserved/ https://www.preposterousuniverse.com/blog/2010/02/22/energy-...