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Why are there (ignoring technological barriers) events that have occurred that we cannot see i.e. the light has not reached us yet? My query is based on the premise that all matter origated from a singularity. Did this original "explosion" happen at faster than the speed of light?
It's a good question. The first thing is that "explosion" is strictly in quote marks. "Expansion" is probably a better word. The galaxies we can't see (or may one day lose sight of) are not travelling away from us at any special speed. The amount of space between the two has increased primarily because space itself is expanding - if the rate of expansion outpaces the speed of light then the light never reaches us. Its a bit like the 'stretching corridor nightmare', no matter how long the light 'runs' it will never reach the door because more and more corridor seems to be made (or the existing corridor is stretched further and further forever (or maybe it'll 'snap' back at some point?).
I should probably note: the more space that seperates two galaxies - the greater the effect, making for cumulative effect where objects seems to be receding faster the further away they are.
Edited by Modulous, : No reason given.
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