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Message: <blockquote data-quote="Umbran" data-source="post: 5697983" data-attributes="member: 177">I said 14 billion light years.  I then noted that I was rounding up from 13.7+ billion light years.You were the one who said 15 billion first in this thread, as far as I can tell. Others picked that number up from you.Getting back to the original question - by the time there were stars to see, the Universe was already very large, with a radius over (likely far, far over) 13.75 billion light years.I've tried to address this before.  Let me try another way.When we look at an object today, we might say it is X light years away.  But we are measuring that in our simple 3d concept of flat space, that we get from our local area today.  If we assume that our yardsticks and clocks are immutable, and track back to time=0, yes, it looks like we have a problem with lightspeed.The thing is, your yardsticks and clocks are *not* immutable.  That's Einstein's point.  The closer to the Big Bang you get, in fact, the more those yardsticks and clocks change!  It is as if we used your height as a measure of distance - a signpost might be 24 Bulllgrits away.But, the Bullgrit isn't a constant thing, now is it?  When you were 5 years old, it was still one Bullgrit, but it was still less than today's Bullgrit.  This seems like a paradox - it is still a Bullgrit, but it isn't, because in our heads we are still comparing it to a yardstick that we think of as objective and unchanging.  But, and here's the clincher - there is no immutable yardstick!</blockquote>

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