What Theorists are up to

http://arxiv.org/abs/0912.0520

Ordinary stars are powered by the fusion of light nuclei into heavier
ones -- such as hydrogen into helium in the center of our Sun.
Electroweak stars, they theorize, would be powered by the total
conversion of quarks -- the particles that make up the proton and
neutron building blocks of those nuclei -- into much lighter particles
called leptons. These leptons include electrons, but especially
elusive -- and nearly massless -- neutrinos.