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Expending universe

  1. Aug 19, 2014 #1
    Question the thing in the region of space that cannot be seen from us because they recede faster than the speed of light would not they go backward in time relative to us since they exceed the speed of light relative to us ? I know we cannot see it but would not it be true ? or I am missing something ?
  2. jcsd
  3. Aug 19, 2014 #2


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  4. Aug 19, 2014 #3


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    Yes, what you are missing, as you will see if you read the thread linked to in the post above mine, is that you are taking recession velocity as speed, which it is not (in the sense that you are using it).

    Google "metric expansion" for more discussion.
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