White Dwarfs, Neutron Stars, and Pulsars

White dwarfs, neutron stars, and pulsars are stellar remnants formed from the evolution of stars. A white dwarf is the dense core left after a medium-sized star, like our Sun, exhausts its fuel, becoming a small, hot body gradually cooling over time. Neutron stars are the remnants of massive stars that have exploded as supernovae, collapsing under gravity until protons and electrons combine, resulting in an extremely dense object made mostly of neutrons. Pulsars are rotating neutron stars that emit beams of radiation, appearing as pulsing signals when their beams sweep past Earth, similar to a lighthouse.