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Old 04-11-2009   #10 (permalink)
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Re: The very speculative nature of wormhole physics

Quote:
Originally Posted by CraigD View Post
The greatest observed redshift are on the order of z=7, which corresponds to a distance of about 4 billion parsecs, a few thousand times the radius of the Local Group. Hubble’s law, which is widely believed to give accurate estimates at all distances in the observed universe, gives a recessional velocity for such a very distant body of about
v = D H_0 = 3.9 \,\mbox{Gpc} \cdot 70 \,\mbox{km/s/Mpc} = 273000000 \,\mbox{m/s} = 0 .91 \,\mbox{c}
, corresponding to a time dilation factor of about \sqrt{1-0.91^2} \dot= 0.41.
Thanks! That was pretty much the answer I was looking for.
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