  We study the weak interaction rates involving Goldstone bosons in the Color
Flavor Locked (CFL) quark matter. Neutrino mean free path and the rate of
energy loss due to neutrino emission in a thermal plasma of CFL pions and kaons
is calculated. We find that in addition to neutrino scattering off thermal
mesons, novel Cherenkov like processes wherein mesons are either emitted or
absorbed contribute to the neutrino opacity. Lack of Lorentz invariance in the
medium and loss of rotational invariance for processes involving mesons moving
relative to the medium allow for novel processes such as $\pi^0 \to \nu
\bar{\nu}$ and $e^- \pi^+ \to \nu_e$. We explore and comment on various
astrophysical implications of our finding.
