http://www.space.com/scienceastronomy/mystery_monday_040524.html
I was reading an article about the size of the universe & got very confused. It explained it thus:
My problem is this: A star produces X number of photons along a hypothetical straight line in one "year". The first photon is a light-year away from the sun, the last one is just coming out of the sun. According to the quote above, the line has now stretched 1,000 times it's original length. Since there are still the same number of photons along that line, wouldn't the light be 1,000 times "weaker" to our eyes?
What piece is my layman's brain missing?