Cosmology has always fascinated me. This article, describing a dark flow discovered by scientist Sasha Kashlinsky that, if confirmed, would indicate significant flaws in our current model of the universe. It may indicate that space-time could be irregular, that matter/energy may not be distributed evenly throughout the universe, and it may indicate that after the Big Bang our universe may have collided with another.
Also, for a bit of a mind-bender check out the bit about how our universe might have been formed with a fractal distribution of matter and how that changes so much.
