A neutron star is the gravitationally collapsed core of a massive supergiant star. It results from the supernova explosion of a massive star —combined with gravitational collapse —that …

Nov 21, 2025 · Neutron star, any of a class of extremely dense, compact stars thought to be composed primarily of neutrons. Neutron stars are typically about 20 km (12 miles) in …

May 24, 2023 · Neutron stars are the remains of the cores of massive stars that have reached the end of their lives. They are one of the two possible evolutionary endpoints of the most massive …

Mar 28, 2023 · When a massive star explodes as a supernova at the end of its life, its core can collapse into a tiny and superdense object with not much more than our sun’s mass. These …

Sep 23, 2021 · Neutron stars are formed when a massive star runs out of fuel and collapses. The very central region of the star – the core – collapses, crushing together every proton and …

Dec 27, 2023 · Neutron stars are incredibly dense, city-sized remnants of massive stars. They form after a supernova when gravity overcomes electron degeneracy pressure. Some neutron …

May 13, 2025 · A neutron star forms when a medium-sized star reaches the end of its life and explodes as a supernova, after which it leaves an incredibly dense core behind. The name …

Oct 9, 2025 · Neutron stars are incredibly dense celestial objects that form when a massive star explodes in a supernova. They are composed almost entirely of neutrons, hence the name …

Oct 24, 2019 · Neutron stars, or pulsars spit out beams of radiation as they spin. (Image credit: Shutterstock) Researchers have considered using the stable, clock-like pulses of neutron stars …

If what remains of the core of the star after the supernova explosion has a mass less than about three times the Sun’s mass, then it forms into a neutron star (if the remnant is more massive, it …