A dying star collapses. The gravity is so strong that everything is absorbed, even light.
2006-07-14 00:26:03
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answer #1
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answered by Texas Cowboy 7
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A black hole is formed when a star finishes all its hydrogen,helium,oxygen and only CO2 is left, the star bigger than the sun becomes a black hole. the stars smaller than the size of the sun becomes neutron star. It is still not found that what the sun will be a black hole or a neutron star. When the star of bigger size of the sun ends up its fuel the core of the sun collapse due to very high pressure and heat thus all the mass fells in itself. Black hole is actually not big but the gases from the universe attracted towards it makes it bigger. It have very strong gravity which can even attract a nearby star towards itself.Black hole is so strong that even light cannot escape it so it appears black in colour.
2006-07-14 00:37:01
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answer #2
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answered by Varinder 1
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There are two main processes constantly going on in massive stars: nuclear fusion (which tends to blow the star's hydrogen outward from the star's center) and gravitation (which tends to pull all hydrogen back in the direction it had come). These two processes balance one another until all the star's hydrogen is exhausted, allowing gravitation to take over. Once gravitation dominates, the star becomes unstable and starts to collapse. Once the star starts to collapse, it does not stop, and the star (and ultimately its atoms) will cave inward upon itself, resulting in the formation of a black hole (Hewitt 186).
Formation of a Black Hole
However, not all stars upon gravitational collapse form black holes. A star less than 1.4 times the mass of the sun will become a white dwarf. A star between 1.4 and 3 times the mass of the sun will become a neutron star. It's only those stars greater than 3 times the mass of the sun that become black holes upon collapse.
Additionally, a black hole can be formed by compression through external forces. This type of black hole is called a primordial black
2006-07-14 00:28:13
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answer #3
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answered by Anonymous
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No one knows for sure but it is hypothesized that a black hole is formed when a star dies and it's gravity causes it to collapse inward upon itself. It gets condensed to a relatively small spot in space and time but still retains it's gravitational power.
All that gravitational power condensed into a small spot....
2006-07-14 00:26:36
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answer #4
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answered by crazyotto65 5
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After a star dies off, it implodes, reversing all the energy and mass. This makes a hole in the fabric of spacetime, creating a singularity and an amazing amount of mass and gravity that defies the laws of modern physics.
2006-07-14 00:26:02
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answer #5
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answered by TheAnomaly 4
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When gaint stars loose their fuel by burning all the hydrogen they have either they explode violently like super novas or they crush themselves under their own gravity to from black holes.
2006-07-14 00:30:29
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answer #6
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answered by Udai K 1
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A massive star collapse, got very strong gravitional so collapse, but then got such huge gravitational pull, it collapse forever. (meaning, after collapsing, the edge of the collapsed star is nearer to the center, therefore collapse even more and go on forever).
2006-07-14 03:25:03
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answer #7
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answered by Anonymous
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