A neutron star
A neutron star is a compact stellar remnant formed from the gravitational collapse of a massive star following a supernova. It is characterized by extremely high density and strong gravitational and magnetic fields.
Neutron stars are discussed in astrophysics, stellar evolution, and high-energy astronomy.
Status
Neutron stars are identified through electromagnetic observation and timing measurements, including radio pulsations and X-ray emission. Models of their internal structure, equation of state, and magnetic behavior remain areas of active research.