Gravitational collapse as a research area investigates the nonlinear dynamical evolution of self-gravitating systems under general relativity and, where appropriate, Newtonian gravity, focusing on conditions under which matter configurations become unstable and contract to form compact objects or singularities. It encompasses analytical and numerical studies of stability thresholds, critical phenomena, horizon formation, equation-of-state dependence, and the role of angular momentum, radiation, and magnetic fields. The field also addresses cosmic censorship, gravitational-wave signatures, and the interplay between microphysical processes (e.g., nuclear and particle interactions) and macroscopic spacetime dynamics in contexts such as stellar core collapse, supernovae, and black hole formation.
Black holes are fundamental to the structure of galaxies and critical in our understanding of gravity, space, and time. A stellar mass black hole is a type of black hole that forms from the gravitational collapse of a massive ...
Astronomy
Apr 9, 2025
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An international research team led by Dr. Zhang Suinan from the Shanghai Astronomical Observatory of the Chinese Academy of Sciences has uncovered the unique mechanisms governing star formation in the Central Molecular Zone ...
Astronomy
Apr 3, 2025
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Once upon a time, the core of a massive star collapsed, creating a shockwave that blasted outward, ripping the star apart as it went. When the shockwave reached the star's surface, it punched through, generating a brief, ...
Astronomy
Jan 14, 2025
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Collapsed dead stars, known as neutron stars, are a trillion times denser than lead, and their surface features are largely unknown. Nuclear theorists have explored mountain building mechanisms active on the moons and planets ...
Astronomy
Jan 13, 2025
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According to the most widely held astronomical model (the nebular hypothesis), new stars are born from massive clouds of dust and gas (aka a nebula) that experience gravitational collapse. The remaining dust and gas form ...
Astronomy
Jan 13, 2025
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Neutron stars are so named because in the simplest of models they are made of neutrons. They form when the core of a large star collapses, and the weight of gravity causes atoms to collapse. Electrons are squeezed together ...
Astronomy
Dec 16, 2024
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Lots of things out in the universe can cause a supernova, from the gravitational collapse of a massive star, to the collision of white dwarfs. But most of the supernovae we observe are in other galaxies, too distant for us ...
Astronomy
Dec 10, 2024
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Imagine the formation of a black hole and you'll probably envision a massive star running out of fuel and collapsing in on itself. Yet the chaotic conditions of the early universe may have also allowed many small black holes ...
Astronomy
Dec 2, 2024
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Stars with masses between 10 and 30 times that of the sun, in their final evolutionary stages, form an iron core that ultimately collapses into a neutron star. This collapse releases a tremendous amount of gravitational potential ...
Astronomy
Nov 20, 2024
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Massive stars about eight times more massive than the sun explode as supernovae at the end of their lives. The explosions, which leave behind a black hole or a neutron star, are so energetic they can outshine their host galaxies ...
Astronomy
Nov 11, 2024
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