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Neutron stars are formed by the gravitational collapse of the cores of larger stars. They are the remnant of supernova types Ib , Ic , and II . Neutron stars are expected to have a skin or "atmosphere" of normal matter on the order of a millimeter thick, underneath which they are composed almost entirely of closely packed neutrons called ...
Simulated collision of two neutron stars. A stellar collision is the coming together of two stars [1] caused by stellar dynamics within a star cluster, or by the orbital decay of a binary star due to stellar mass loss or gravitational radiation, or by other mechanisms not yet well understood.
The Holmes rebound phenomenon is a reflex that occurs when one attempts to move a limb against resistance that is suddenly removed. [1] When the resistance is removed, the limb will usually move a short distance in the original direction, at which point the antagonist muscles will contract, causing the muscle to yank back in the opposite direction. [2]
Artist's impression of neutron stars merging, producing gravitational waves and resulting in a kilonova. A neutron star merger is the stellar collision of neutron stars.When two neutron stars fall into mutual orbit, they gradually spiral inward due to the loss of energy emitted as gravitational radiation. [1]
A new image from the James Webb Space Telescope (JWST) shows at least 17 dust rings – resembling a fingerprint – created by a rare type of star and its companion, locked in a celestial dance.
Stars far more massive than the sun evolve in complex ways. In the core of the star, hydrogen is fused into helium, releasing thermal energy that heats the star's core and provides outward pressure that supports the star's layers against collapse – a situation known as stellar or hydrostatic equilibrium. The helium produced in the core ...
A star system 3,000 light-years away from Earth is predicted to become visible to the naked eye this year — likely a once-in-a-lifetime viewing opportunity, as the phenomenon only occurs roughly ...
The model for the formation of this category of supernova is a close binary star system. The larger of the two stars is the first to evolve off the main sequence, and it expands to form a red giant. The two stars now share a common envelope, causing their mutual orbit to shrink.