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Response to thereismore (Reply #3)

Wed Oct 23, 2013, 02:11 PM

8. 30 Billion is correct

The galaxy in question would have been much closer when that light was emitted, closer even than 13.1 billion light years. However, the space between us has been expanding while the light traveled.

It's a difficult integral, but all things considered light requires 13.1 billion years to cover far less than 13.1 billion light years--while always moving at exactly the speed of light.

At the present date, said galaxy is now estimated at 30 billion light years away, outside of our current visible universe. But when that light was emitted, it was inside our visible universe.

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