Quote:
Originally Posted by astroron
The light took 9 billion years from that galaxy to reach us,so in fact that galaxy will be now 9 billion years older today.
When the light of that galaxy left the galaxy the galaxy was probably only 3 billion years old,and if we were able to see it today it probably would not look the same as it did back then.
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If alpha Centauri exploded today we would still be seeing it as a normal star in the night sky for another 4.3 years even though it has actually turned to dust and gas.
It's a little bit like estmating the actual size of the universe. If the Big Bang occurred 13.4 billion years ago, and there is a speed limit in the universe of "c" how can the size of the universe be over 90 billion light years across?