Gravitational collapse in astronomy is the sudden inward fall of a massive body under the influence of the force of gravity.
Definition: gravitational collapse: When a massive body collapses under its own weight. (For example, interstellar clouds collapse to become stars until the onset of nuclear fusion stops the collapse.) ...
Gravitational collapse
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gravitational collapse
When a massive body collapses due to its own mass. Gravitational collapse occurs in stars after the internal pressure cannot support the inward force of gravity.
gravitational collapse: The stage in the formation of a massive planet when it grows massive enough to begin capturing gas directly from the nebula around it.
Gravitational Collapse
The sudden collapse of a massive star when the radiation pressure outward is no longer sufficient to balance the gravitational pressure inward.
Gravitational collapse begins when a star has depleted its steady sources of nuclear energy and can no longer produce the expansive force, a result of normal gas pressure, that supports the star against the compressive force of its own gravitation.
Gravitational Collapse as the Greatest Crisis in Physics of All Time 1196
Assessment of the Theory that Predicts Collapse 1198
Vaccum Fluctuations: Their Prevalence and Final Dominance 1202 ...
Gravitational Collapse
The first step in the birth of a star is to wait. Dust, gas, and other materials sit around in nebulae, and wait for eons until a passing star, shockwave, or other gravitational disturbance passes through or by the nebula.
The gravitational collapse of a GMC does not result in a single, massive star. Instead the cloud tends to fragment into smaller denser regions that each collapse to form star systems.
Stars undergo gravitational collapse when they can no longer resist the pressure of their own gravity.
gravitational collapse (AS&T Dictionary) The sudden shrinkage of a massive star's core at the end of nuclear buring, occurring when the outflow of energy is no longer balanced by the inward pull of the star's own gravity; ...
Black holes might form, for example, from the gravitational collapse of a massive star. When the star shrinks inside an event horizon, it will collapse without known limit, leaving the surrounding space empty, Thus the designation `hole'.
Stars are born out of the gravitational collapse of cool, dense molecular clouds. As the cloud collapses, it fragments into smaller regions, which themselves contract to form stellar cores.
A calculation of thermal evolution shows that Saturn could have originated with the gravitational collapse of gaseous hydrogen and helium from the original solar nebula onto a massive ice-rich core of perhaps 10 to 20 Earth masses.
Gravitational Collapse: From Massive Stars to Planets: 46-49, Revista Mexicana de Astronomía y Astrofísica. Retrieved on 2008-06-24.
^ a b Richmond, Michael (November 10, 2004). "Late stages of evolution for low-mass stars".
The fragmentation and gravitational collapse of an interstellar cloud of gas and dust, triggered perhaps by nearby supernova explosions, may have led to the formation of a primordial solar nebula.
Low mass stars form through a process of fragmentation and gravitational collapse inside a giant cloud of molecule hydrogen. "The question has always been, do high mass stars form in the same way?" says Davies.
Neptune and Uranus are small enough to have lost all of the energy liberated at their cores through gravitational collapse since their formation four and a half billion years ago.
Many nebulae form from the gravitational collapse of diffuse gas in the interstellar medium or ISM.
An important process in the initial stage of star formation whereby clumps of a molecular cloud uncouple from the interstellar magnetic field, which would otherwise resist the further gravitational collapse of the clumps.
They become such stellar remnants after their cores have consumed enough of their fusionable elements that they have undergone gravitational collapse into planet-sized objects, ...
1939 - Robert Oppenheimer and Hartland Snyder calculate the gravitational collapse of a pressure-free homogeneous fluid sphere and find that it cuts itself off from communication with the rest of the Universe, ...
Massive stars need higher central temperatures and pressures to support themselves against gravitational collapse, and fusion reactions in these stars proceed at a faster rate than in lower mass stars.
supernova Explosive death of a star, caused by the sudden onset of nuclear burning in a white dwarf star (Type Ia), or gravitational collapse of the core of massive star followed by a shock wave that disrupts the star(Type II, Type Ib, Ic).
With no source of energy production in the core there is no longer any outward radiative pressure to resist gravitational collapse, and the outer regions of the star start to collapse (9 → 10).
2. Both rotation and magnetic fields act to accelerate the gravitational collapse of an interstellar cloud. (Hint)
3. The time a solar-type star spends forming is relatively short compared to the time it spends as a main-sequence star. (Hint) ...
The Sun was born about 4.6 billion years ago from the gravitational collapse of a vast cloud of gas and dust. Material in the center of the cloud was squeezed so tightly that it became hot enough to ignite nuclear fusion.
If a black hole didn't collapse down to a singularity, then there must be something preventing the collapse - but there is no known force that can overcome the huge gravitational collapse that we run into in these extreme conditions.
Because of the great mass, the inner parts of Jupiter undergo gravitational collapse, and the gravitational potential energy turns to thermal energy. As a result, Jupiter radiates more energy than it receives from the Sun.
According to the nebular hypothesis, part of an interstellar cloud of dust and gas underwent gravitational collapse to form a primeval solar nebula.
HELMHOLTZ CONTRACTION
The Helmholtz contraction is the gravitational collapse of a protostellar cloud that is slowed by outward gas pressure and the limited rate at which radiation can escape.
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A neutron star is a type of compact star that can result from the gravitational collapse of a massive star during a Type II supernova, Type Ib and Ic supernovae supernova event....
, created during the explosion.
A protostar is a star in the very earliest stage of development, when interstellar gas is still undergoing gravitational collapse, and nuclear fusion at the core has just begun. The Argolis Cluster is an example of a protostar cluster.
These objects are not big enough for gravitational collapse to heat them to the point that nuclear reactions can be triggered. Brown dwarfs may be very common in the universe and could even have planets in a habitable zone.
gas planets is fuzzy, though gas planets are thought to form from solid cores accreting interplanetary nebula material, and therefore, should have relatively more heavy elements than a star/brown dwarf which forms from simple gravitational collapse ...
Supernova explosions come in , depending on the of the stars that exploded. Type II SNe are the result of the gravitational collapse of massive stars. Type I SNe arise from runaway nuclear on the surface of a in a binary .
*** What is gravitational collapse?.
*** How were planets created?
*** Sun's temperature and energy density of sunlight
*** What makes the sun shine so brightly?
*** "How often are stars born?" ...
Schwarzschild radius is the radius below which the gravitational attraction between the particles of a body must cause it to undergo irreversible gravitational collapse. This phenomenon is thought to be the final fate of the more massive stars.
But in the black hole case the initial star was so massive that nothing could stop its gravitational collapse. All the matter of the star's core is crushed to an infinitely small point, a singularity.
Breakouts occur on the flanks of some domes and radial fractures extend down the slopes into the surrounding plains. Many domes show evidence of gravitational collapse, slumping, tectonism, impact, and lava flooding.
but recent developments have been made suggesting that a filament was drawn out of a passing protostar at a time when the Sun was a member of a loose cluster of stars but the most favoured theories still involve the gravitational collapse of a gas ...
 See also: Collapse, Gravitation, Mass, Star, Light
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