Einstein's theory of general relativity is our best description of the universe at large scales, but a new observation that reports a "glitch" in gravity around ancient structures could force it to be modified.
So it might be a skybox after all...
Odd that the local gravity is stronger than the rest of the cosmos.
Makes me think about the fringe theory I've posted about before that information might have mass.
Do we think we are ever going to crack Quantum Gravity?
I had heard recently that another line of thinking was treating gravity as an emergent property of the other fundamental forces and not fundamental itself. Seemed interesting but no idea if it is even testable.