  After a brief discussion of a possible relationship between the electroweak
phase transition in highly compressed matter and gravitational collapse, we
examine the speculative possibility that the electroweak phase transition might
be contemporarily occurring in processes in neutron stars. We conjecture that
adiabatic compression of neutron star matter due to focusing of the energy from
a supernova bounce into a very small volume could result in extreme densities,
and Fermi levels or temperature above $\cal{O}$ (100 GeV). We propose a
qualitative scenario for sonoluminescence in neutron stars and discuss possible
observable consequences.
