Quote:
On 2003-02-14 10:00, JS Princeton wrote:
In other words, somebody looking at the universe 10 billion light years away will not see the same parts of the universe as we will.
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If those parts are not observable here, do we consider them in the same universe? Or do they become part of our universe when time passes long enough for them to become observable?
Or do you mean they are 10 billion lights years away
and 10 billion years ago?