Complex sentence: An electroweak star is a theoretical type of exotic star, whereby the gravitational collapse of the star is prevented by radiation pressure resulting from electroweak burning, that is, the energy relased by conversion of quarks to leptons through the electroweak force.
Split into simpler sentences: An electroweak star is a theoretical type of exotic star, whereby the gravitational collapse of the star is prevented by radiation pressure resulting from electroweak burning. That is, the energy relased by conversion of quarks to leptons through the electroweak force.