Hi,
Why I am not surprised that lylejk here is an expert in cosmology as well?
To asnwer your question in gimptalk:
Quote:
Anyway, clarify to me about why we can just now see light from distant objects after billions of years if, we actually all started from a single point. The model for my mind's eye is the best that I can come with that explains it (as a lay person). The universe is indeed expanding at an accelerated rate and the only thing that can bypass the speed of light limit is space itself.
Because the Universe is expanding, the lights are "dragged along" its expansion. So the distance between two galaxies is continually increasing, and very distant galaxies have recession velocities greater than the speed of light. Besides, cosmologists have not reached a definitive conclusion what happens at the Big Bang itself; for example whether our Universe indeed starts from a point (zero size) or it has finite size (Planck length). The moment of Big Bang itself is difficult to explain scientifically because at that time the Universe is extremely dense and extremely small, so to explain it, we need quantum theory of general relativity, which we don't have yet (string theory is one candidate, but it hasn't produced testable predictions, so we don't know whether it is correct or not).
Anyway this is a paper to explain common misconceptions about cosmological horizons, superluminal expansion of our Universe, etc:
Expanding Confusion: common misconceptions of cosmological horizons and the superluminal expansion of the Universe