Tags: Star.
3C58 or 3C 58 is a pulsar and supernova remnant within the Milky Way that is possibly associated with the supernova SN 1181. There are however signs that indicate that it could be several thousand years old and thus not associated with that supernova. 3C58 is notable for its very high rate of cooling which is unexplained by standard theories of neutron star formation.
