Interesting, Tara. Some support for the idea that we live in a low-density part of a much larger universe was posted about a week ago on the website Astronomy Now. According to recent data gleaned from measurements made by NASA's Wilkinson Microwave Anisotropy Probe (WMAP), huge numbers of galaxies in our universe actually appear to be pulled in a certain direction of the sky, in the direction of constellations Centaurus and Vela. A possible reason could be that something enormously massive is pulling our universe in that direction, but whatever this concentration of mass may be, it would be located beyond our own universe's 'horizon' - beyond our 'bubble', so to speak - so that we can't see it.
Galaxies go here Ann
