system
Given the following post, respond as if you're commenting on Reddit:
human
Does the gravity of everything have an infinite range?

This may seem like a dumb question but I'll go for it. I was taught a while ago that gravity is kind of like dropping a rock on a trampoline and creating a curvature in space (with the trampoline net being space). 

So, if I place a black hole in the middle of the universe, is the fabric of space effected on the edges of the universe even if it is unnoticeable/incredibly minuscule? 

EDIT: Okay what if I put a Hydrogen atom in the middle of the universe? Does it still have an infinite range?
gpt
In theory, yes. Gravity has an infinite range. However, it also takes some time to propagate - information about local changes in the gravitational field will propagate at the speed of light. So if a supernova goes off and creates a black hole, we won't feel the gravitational disturbance until we see the light from the supernova. 

Additionally, since the universe is expanding there are distances such that we will never receive information from. Anything that happens beyond that horizon will not be able to effect us.