Where is the Centre of the Universe?

The "center of the universe" has always been a very important idea for humans. Just as a new baby might think he or she is at the center of the universe, for thousands of years people saw Earth as the center of the cosmos. Some ancient Greeks thought the universe was made of two spheres: one of the spheres was Earth, and the other was the sky, which surrounded Earth and was studded with stars.

In the 1500s, the Polish astronomer Nicolaus Copernicus had a better idea--although still wrong--for explaining the motion of the planets through the night sky. He thought that the Sun was actually the center of the universe, with Earth and the other planets circling the Sun. However, the sphere of stars surrounding the solar system remained as part of his idea.

According to Philip Gibbs (Where is the Centre of the Universe? 1997), there is no centre of the universe!  According to the standard theories of cosmology, the universe started with a "Big Bang" about 14 billion years ago and has been expanding ever since.  Yet there is no centre to the expansion.  It is the same everywhere.  The Big Bang should not be visualised as an ordinary explosion.  The universe is not expanding out from a centre into space.  The whole universe itself is expanding and it is doing so equally at all places, as far as we can tell.

Source: http://math.ucr.edu and http://spaceplace.nasa.gov