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magnamed t1_ix769qn wrote

Reply to comment by IronSmithFE in Someone tell me how the Big Bang began 13 billion years ago, yet the *observable* universe is 83 billion light years apart? by novacks0001

How so. Nothing says that the space only doubled in that time.

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Ooops2278 t1_ix7805x wrote

The original question is about a perceived contradiction. Or actually two...

  1. How can the universe have expanded faster than light? Then the answer that it expanded in different direction at the same time is not helpful as that indeed would limit it to 2 times lightspeed in opposing directions.

  2. How can we observe something 83 billion years away when the light did not have time to reach us in only 13 billion years? Which leads to the exact same problem when we assume light speed to be a cap. When we observe it now it must have been 13 billion light years away back then but moved (relative to our position) another 70 billion light years away since then.

So any answer about the expansion of the universe without addressing light speed is not helpful.

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