Everything seems to move around us. The sun, moon, stars and planets all rise in the east, pass overhead and set in the west. No wonder ancient astronomers thought the Earth was at the center of the solar system. Now we know our planet is just one of many orbiting the sun, but what about the rest of the universe? We see stars and galaxies in every direction and they all seem to be moving away from us. We journey to the edge of space to find out if there is a center at all.