==There is no center of the Universe.
Actually, even the Big Bangers admit that the Universe appears to have a center, and that our solar system appears to be close to it. They also admit that they threw this out of their cosmology for ideological, not scientific, reasons. According to them, it would make earth appear to be “too special.”
Earth apparently appears just “too special” with alarming frequency of late. All manner of workarounds are being theorized to surmount it. Multiverse, anyone?
The closest that we have to a center is an event horizon that we can't see beyond and that event horizon encompasses us in every direction. It is the same as every point on the surface of the earth could be considered the center. In other words it is a meaningless concept.
There's a difference between admitting that something "appears to be," and admitting that something "is." We appear to be the center of the universe, because we can look in any direction and see the universe. But that seems to be true of every other point in the universe, as well. Imagine that our universe is two dimensional, and that it's the surface of a sphere. Imagine you are a 2-D observer on the surface of the sphere. No matter which direction you look, you're going to see a horizon some distance away. If you measure the distance to the horizon, it's going to be the same in every direction. It appears you are at the center of the universe. But another observer standing on the other end of the sphere performs the same experiment, gets the same result, and she can determines that she's at the center of the universe. In fact, there is no center on the surface of a sphere. Our 2-D observers must remain ignorant of this fact until they discover that the surface they live on is curved. Our universe is like the 3-D surface of a 4-D hypersphere; it appears we're in the middle, but the curvature of spacetime makes the concept of a center meaningless.
Another way of looking at it: It's kind of like Asteroid and other old video games--when you go off one end of the screen, you appear at the opposite side of the screen. So the center of the screen isn't special at all; any point on the screen could be the center.