On the expansion of the Universe

"It is also possible for a distance to exceed the speed of light times the age of the universe, which means that light from one part of space generated near the beginning of the Universe might still be arriving at distant locations (hence the cosmic microwave background radiation). These details are a frequent source of confusion among amateurs and even professional physicists."

Jed, this is mostly for you, having discussed with me recently the accelerating expansion of the universe. You might find this interesting: http://en.wikipedia.org/wiki/Metric_expansion_of_space