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In article ,
George Dingwall wrote: Now, assuming that the universe is expanding equally in all directions, how do you get from the point of origin of the big bang out to a distance of more than 75 billion lightyears in only 13.7 billion years? I don't know if the numbers are right, but as I understand it the size of the universe is not a question of objects moving in space, but of space itself expanding. Consider one of those ballon analogies: if space is the surface of the ballon, then things can't move on it faster than the speed of light, but if the ballon itself is inflated the distance between things will increase without their moving. Of course, understanding the analogy doesn't amount to understanding the real thing. -- Richard -- "Consideration shall be given to the need for as many as 32 characters in some alphabets" - X3.4, 1963. |
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