The universe was created 13.7 billion years ago. We are able to observe things much further than 13.7 billion light years away. This suggests that the light has been traveling for more than 13.7 billion years. What accounts for this?
I understand that the universe is expanding at everypoint and there are things many times further away from us then 13.7 billion light years, but how are we able to observe them? What am I missing?
2007-01-10
07:49:35
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4 answers
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asked by
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Science & Mathematics
➔ Astronomy & Space
Maybe? When an astronomer says that they discovered a galaxy approximately 30 billion light years away they are talking about current distance calculated? The actual light that was observed was emitted 20 billion years earlier when it was much closer to earth?
2007-01-10
08:12:15 ·
update #1
Correction on above comment: The light could not have been emitted 20 BYA because the object did not exist then.
2007-01-10
08:13:25 ·
update #2
Im an idiot, i realize where I was messing up. Should have just thought about it for a few more minutes rather than post a question.
2007-01-10
08:19:28 ·
update #3