[tkahnoski]

Lately I've wondered... what if this flow of time wasn't true? at least not at universe scale? Messier than just gravitational affects but actual weird topography in time?

There is nothing scientific about this conjecture, simply a thought I haven't had time to fully contemplate. What if there were loops and turns such that light and energy from distant galaxies would loop back around not just in space but in time creating weird feedback loops.

[tkahnoski]

A few quick googles... https://en.wikipedia.org/wiki/Closed_timelike_curve as usual early thinkers on General Relativity were already going down this road.

[b3lvedere]

Isn't it sort of not true at the extreme universal levels like black holes where spacetime gets incredibly weird?

[prettyStandard]

All SpaceTime curves start at the Big bang, and they all end at black holes.

Also time and space get flipped inside a black hole. All of your futures point further into the black hole.