Is this a postulate? I get the expansion of the universe, the addition of discrete bits of space time between me and a distant galaxy, until very distant parts of the universe are moving relative to me, faster than the speed of light. But the other sure seems like (giant steaming load of convenience) I think I get reasons why, because they don't have any other way to explain the size of the universe and so on. Just seems it would be much easier to say the universe is eternal and cyclical in nature, and call it a day!

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    $\begingroup$ from this and your other question about black holes, it seems like you are basing a lot of your conceptions on pop-science descriptions of phenomena. If you haven't learned the mathematics yet that's fine, but trying to poke holes in theories based on layman's analogies is a fairly futile endeavour $\endgroup$
    – user2963
    Jan 26 '12 at 23:17
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    $\begingroup$ I'd have sworn that we'd done this already but I can't find a duplicate. $\endgroup$ Jan 26 '12 at 23:31
  • $\begingroup$ Possible duplicates: physics.stackexchange.com/q/26549/2451 and links therein. $\endgroup$
    – Qmechanic
    May 22 '13 at 20:29

There are rules about things moving through space faster than light - there is no rule about space expanding faster than light.

As long as it can't be used to transfer information then there is no problem with relativity.

  • $\begingroup$ So basically, this doesn't violate special relativity since information isn't moved FTL, it is created FTL? I might have understood it wrongly. $\endgroup$ Feb 20 '13 at 18:34
  • $\begingroup$ Special Relativity is only valid locally. SR is, you can say, a special case of General Relativity in kinda the same way Newtonian Mechanics is a special case of Special Relativity. You can look at it like raisins in a rising dough. If the dough is large enough and the rising is uniform, some raisins are bound to be moving away from each other faster than light. This is perfectly fine, since what Special Relativity tells you is that you cannot move between any two raisins faster than light. $\endgroup$
    – Thriveth
    Jun 6 '13 at 15:33

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