Sorry I didn't mean the expansion was slowing down. Rather that the expansion is going much more slowly than would be expected if there were no universal gravity. Imagine a bubble and everything outside the bubble is, basically, a black hole. Now consider that everything inside this bubble is the universe as we know it. Hey it's a crazy thought but I cannot see any other reason for this universal gravity (which is isometric, which means it comes form all directions)
Wild huh?
Try telling this to anyone though.

Josephine