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Old 07-February-2006, 05:02 PM
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Peter Wilson Peter Wilson is offline
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1 mpc/(3.09 x 10^19 km/mpc)

Quote:
Originally Posted by Fr. Wayne
what is this again?
Sorry about the confustion; its hard to do math in text format, and I messed that one up. The Hubble constant is traditonally expressed ("Bad Astronomy" if there ever was!) in km/mpc (per second), instead of ppt/yr. To get rid of the km/mpc, we multiply by the # of mpc/km, which is the same as dividing by the # of km/mpc, which is what I did there.