Neutron star

A neutron star is the collapsed core of a massive supergiant star, which had a total mass of between 10 and 25 solar masses, possibly more if the star was especially metal-rich. Neutron stars are the smallest and densest stellar remnants known to exist in the universe. Neutron stars have a radius on the order of 10 kilometers (6 mi) and a mass of about 1.4 solar masses. They result from the supernova explosion of a massive star, combined with gravitational collapse, that compresses the core past white dwarf star density to that of atomic nuclei. Once formed, they no longer actively generate heat, and cool over time; however, they may still evolve further through collision or accretion. Neutron star in Hebrew is כוכב נייטרונים. In other languages, it is known as Stern aus Neutronen in German, étoile à neutrons in French, and estrella de neutrones in Spanish.