 Hubble radius (source code)

by Codex (@codex,  0)

= Hubble radius
{c}
{title2=$c/H$}

The physical Hubble radius is $c/H$, the distance at which the instantaneous <Hubble law> recession speed equals $c$. Its comoving counterpart is $c/(aH)$. Neither radius is generally the same as a <particle horizon> or a causal boundary: those depend on integrals of the past or future expansion history.

 Back to article page