what causes blackholes to form in the universe.?

Answer 1

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. As the star shrinks in size (and increases in density), it may assume one of several forms depending upon its mass. A less massive star may become a white dwarf, while a more massive one would become a supernova. If the mass is less than three times that of the sun, it will then form a neutron star. However, if the final mass of the remaining stellar core is more than three solar masses, as shown by the American physicists J. Robert Oppenheimer and Hartland S. Snyder in 1939, nothing remains to prevent the star from collapsing without limit to an indefinitely small size and infinitely large density, a point called the "singularity." A black hole.

Answer 2

A star has two forces working on it at all times.

The nuclear reaction that give off all the energy in the form of heat, light and radiation. We all know, this is explosive and tends to push the star appart. This explosive force is counter-acted by the gravity of the mass pulling itself togeather. All stars exist in this balance.

Eventualy, as the combining of atoms (Nuclear Fusion) creates larger and heavier elements, they become harder to react. Eventualy it doesn't have enough force to continue them reacting, so the explosive force is gone and gravity starts winning. If the star is big enough, it will go Supernova, blow off part of it's mass and briefly outsine the entire rest of the galaxy.

The rest of it's mass, while you are looking at the fireworks, crunches down under it's immense gravity. The bigger it was, the more mass it has, so the smaller it crunches. Some will crunch down until the nuculi of the atoms are virtualy touching. This is a Neutron star.

Some that are still more massive will continue crunching down.. forever.The result is the entire mass of the star being crunched down *infinatly* small. No length. No width. No height. In geometry, this is called a point. In cosmology, we call this a singularity. It still has all the MASS it had before, so it still has the same gravity, but it's ultra small. Something with that much gravity focused on such a small point has an enormously strong gravitational field. So strong that if anything crosses a certian line in approching a black hole, it will be sucked in. Even light is not fast enough to escape. This is called the Event Horizon.

Answer 3

The formation of black holes occurs when a star at least 20 times the mass of our sun are incapable of supporting their own mass from collapsing due to gravity greater than the strength of their internal elements. Because of the collapse, the mass inside the given space of the black hole is much more dense, and so has an immense gravitational pull, forcing anything within the 'event horizon' or within 'reach', if you like, of the black hole's gravitational field to be pulled into it, being compressed due to the huge strength of the gravitational pull. Supermassive black holes are a larger, more destructive black hole and are common in the centre of galaxies, where multiple black holes or huge clusters of stars of stellar mass 10^10 combine and collapse collectively. Intermediate black holes are in between the two and usually have mass from a few 100s to a few 1000s times that of our sun.

Answer 4

Blackholes are caused from exploding stars.The star will go through about 4 stages then once it has used all of its fuel cells it explodes in a dangerous black hole.The black hole is very strong anything around the black hole will be sucked in to a deep hole nothing can escape the force of its gravity not even light. No one knows where the blckhole ends up it wont spit you back out though you just die.

Answer 5

No. The Universe is amazingly definitely a Friedmann answer to the Einstein field Equations. A Black hollow is a Schwarzschild answer. those 2 ideas are basically diverse: the Black hollow has each and all of the mass at a singularity interior the middle, while the Friedmann answer has the mass uniformly dispensed. there's no thank you to coach one into the different.

Answer 6

When a star falls out of equilibrium (stops pushing out as hard as gravity is pushing in) then the star collapses. If the star was massive enough then it will collapse into an incredibly small size with the same mass that the star originally had. This creates a large enough indentation in space time that even light cant escape.

Answer 7

The great IMPLOSION of a Red giant star.. well any star but stil the bigger the star the bigger the black hole when it dies. Its believed that there is a black hole at the heart of every galaxie.