IT'S A HOMOCENTRIC UNIVERSE::

No matter which direction we look in, or how far away our telescopes and instruments are capable of seeing, the Universe appears pretty much the same on large cosmic scales. The number of galaxies, the types of galaxies that are present, the populations of stars that exist within them, the densities of normal matter and dark matter, and even the temperature of the radiation that we see are all uniform: independent of the direction we look in. On the grandest cosmic scales of all, on scales of several billions of cubic light-years, the average difference between any two regions is merely 0.003%: about 1-part-in-30,000.

The biggest differences that we see, in fact, aren't a function of which direction we look in, but rather how far away we're looking.

Tweet   @brothersjudd