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Thread: Universe Age and Diameter/Speed of Light.

  1. #1 Universe Age and Diameter/Speed of Light. 
    Forum Ph.D. stander-j's Avatar
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    Recently I've been wondering about the universe and how quickly it has expanded. I've heard many times that it expands at, or below, the speed of light - but does not expand faster than the speed of light. This leads to some confusion for me:

    According to wikipedia, the believed diameter of the universe is somewhere in the area of 90 billion light years - but the age of the universe is believed to be around 14 billion years. So how does that work? If the universe was only travelling at, or slower, than the speed of light - wouldn't it only be able to have a maximum diameter of 28 billion light years? Or is it that there was a 62 billion lightyear diameter of something before the big bang?


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  3. #2  
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    Don't know who claimed that... Whereever you heard that misled you.

    Read here:
    http://www.mso.anu.edu.au/~charley/p...DavisSciAm.pdf


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    Forum Ph.D. stander-j's Avatar
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    Thanks for that, Neverfly.
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