AstronomyCast Neutron Star

A neutron star is a stellar remnant that can be formed by the gravitational collapse that occurs from one of the several types of supernova events. Neutron stars are composed entirely of neutrons. They contain no electrons and therefore do not have an overall positive charge. They do, however, contain seas of electrons that flow  over and around the crushed together neutrons. Neutron stars are generally very hot and generally have a mass between 1.35 and 2 solar masses. The first neutron star was discovered by Walter Baade and Fritz Zwicky in 1934, and many have been discovered since.