Editing Hubble's law (section)

=== Hubble length ===
The Hubble length or Hubble distance is a unit of distance in cosmology, defined as {{math|''cH''{{sup|−1}}}} — the speed of light multiplied by the Hubble time. It is equivalent to 4,420 million parsecs or 14.4 billion light years. (The numerical value of the Hubble length in light years is, by definition, equal to that of the Hubble time in years.) Substituting {{math|1= ''D'' = ''cH''{{sup|−1}}}} into the equation for Hubble's law, {{math|''v'' {{=}} ''H''<sub>0</sub>''D''}} reveals that the Hubble distance specifies the distance from our location to those galaxies which are {{em|currently}} receding from us at the speed of light.