Right off the bat I'm going to say this is really abstract. About as abstract as string theory or the thought of the speed of light being broken by a moving light source and the light coming off from suns traveling at fantastic speed.... Anywho, basically my theory is this, The size of the any object you deal with, correlates to the speed of time. Sort of how our lives seem miniscule when compared to the cosmos. Perhaps that's because our lives literally are shorter when compared to the happenings in space. So with this in mind, really small things like cells and bacteria, experience time at a speed slightly faster than we do, and solar systems, galaxies what have you, experience time greatly slower than we do. I realize that this is pretty damn "out there" but then again science is full of things that are out there aside from the "practical" applications..