The edge is nothing more than a ripple in the pond
The edge of the universe is nothing more than the ripple you'd see if you threw a stone into a pond. What is outside the universe is the same as whats inside. We had a big bang and our universe is inside the center of that ripple. There are others, well outside what we can see beyond the ripple. It's just so mind-bogglingly far that it's hard to grasp. Think trillions or more of light years away. Much of our galaxy/universe would be forever changed before we'd see light from outside our universe.