what happens to the core of a  when the star burst into a supernova?
494867
pulsar or neutron star that give out radio wave
525144
A star by the burning of hydrogen into helium can only go so far into making the heavier elements. It takes a supernova explosion to make the really heavy elements. These are blown out into space where new stars may form and use these heavier elements, like our sun and earth.
452314
i'll have to think about this.  if a white dwarf acquires additional mass it may create a surface flash of an explosive nuclear reaction and remove some of the white dwarf (nova) or it may build up without exploding increasing the mass of the white dwarf until it becomes a type ia supernova.  i'm not sure, but this question may be asking for 'black hole'.\n\ncan you rephrase the question?\ndo you have any more homework tonight?
4783
Supernova is formed during the death of stars; large stars and super-large stars. Star dies when nuclear fusion has completed and the core of star will get smaller and smaller. A lot of heat is generated and will heat up the outermost layer of the star. \n\nHydrogen within the layer starts to burn and the stars expands. The star will appear red and are called red giant. Furhter heat loss will cause the stars to collapse because the gravitational force becomes the strongest force. It pulls the star inwards.\n\nIf the red giant is big enough, it will contract so quickly a big explosion called "supernova" will occur.\n\nIt's extremely bright and viewable during daylight. The result, a neutron star if the original star is a large star.\n\nIf it's a super-large star, a black hole will be formed. It's called that because no light can escape it including any matter.\n\nReview other answers about black hole for more details. From what I know, a black hole consumes anything for a long term but it is slowly, very slowly dispersing itself. If you want to wait for a black hole to vanish, you will probably have to wait a million years for it to vanish or you just have to find the best one; the oldest black hole.
1009008
black holes happen when stars colapse.  Stars are massive fusion engines.  Their mass alone should make them colapse on themselves due to gravity but the nuclear fusion reactions going on in them where hydrogen atoms are being smashed together and forming helium atoms create huge constant explosive energy forcing the gasses in a star outward.  Eventualy the hydrogen gets used up.  The fuel for the star is gone and the star has nothing to keep it's mass from collapsing on itself.  All the star's gas molecules attract each other toward the center through the force of gravity and finaly all that mass which had taken up the space of thousands of planets is contained in the space of, ooohhhh I don't know a bowling ball.\n\nThat small ball of used up star has a huge density.  Density is mass divided by volume.  For example,  A nerf ball and a small marble may both weigh the same, but the nerf ball has a larger volume so the density is smaller and therefore the nerf ball is softer and if it has a density less than 1g/cc it will float while the marble will sink.\n\nSee when the the mass is in the numerator and the volume is in the denomenator is the volume.  As the volume (denomenator) gets bigger while the mass (in the numerator) stays the same the whole number gets bigger. \n\nThis is what happens in a black hole as it collapses.  It has the same number of gas molecules as it collapses but they get closer together and the volume gets smaller.  Let's say the mass of the star is 1 and watch what happens to the density as you divide it by a smaller and smaller number.\n\n1/10 = .1\n\n1/1 = 1\n \n1/.01 = 10\n\n1/.001 = 100\n\n1/.000 1 = 1000\n\n1/.000 01 = 10 000\n\nSee as the mass stays the same and the volume decreases the density gets bigger.  It quickly approaches infinity.  Math doesn't handle infinity well and we can't predict what happens at this point.  We call a point of infinite density a singularity.  \n\nThis singularity in a black hole has a huge density and huge gravity so nothing can get out, not even light, hence the name BLACK HOLE.  \n\nSo how do we know they're there?  We can see the efects of the black hole on other stars and Stephen Hawkins predicted that the black holes would actualy emit radiation which was detected proving him right and proving black holes.
1153711
A star takes birth from nebula. Then in the ending years of its life it's volume gets increased and becomes red supergiant. Then it becomes supernova for a few months or years but about 10 billion times as bright as our sun. Then \n1) It can get recycled into nebula OR\n2) It can become a neutron star OR\n3) It can become a black hole.\n\nBlack holes are thought to form from stars or other massive objects if and when they collapse from their own gravity to form an object whose density is infinite: in other words, a singularity. During most of a star's lifetime, nuclear fusion in the core generates electromagnetic radiation, including photons, the particles of light. This radiation exerts an outward pressure that exactly balances the inward pull of gravity caused by the star's mass. \n\nAs the nuclear fuel is exhausted, the outward forces of radiation diminish, allowing the gravitation to compress the star inward. The contraction of the core causes its temperature to rise and allows remaining nuclear material to be used as fuel. The star is saved from further collapse -- but only for a while.\n\nEventually, all possible nuclear fuel is used up and the core collapses. How far it collapses, into what kind of object, and at what rate, is determined by the star's final mass and the remaining outward pressure that the burnt-up nuclear residue (largely iron) can muster. If the star is sufficiently massive or compressible, it may collapse to a black hole. If it is less massive or made of stiffer material, its fate is different: it may become a white dwarf or a neutron star\n\nThe gravitationsl pull of black hole is so powerful that it can even suck in light.\n\nThere is a theory that what gets suck by black holes is thrown out by a "whitehole" that matter travels through a "wormhole". But if this is true then may be one day we may travel with or more than the speed of light to reach very very far away points in the universe.\n\nFor more information search http://www.google.com for black hole.
524772
This happened in three ways.\n1) at the time of the Big Bang the matter was very dense. Because of this about a quarter of the available protons got changed into neutrons. These fused with protons to make principally Helium, heavy hydrogen and a tiny bit of Lithium.\n2) this mixture ended up in the first generation of stars.\nDuring their lifetime hydrogen was again fused mainly into helium, but also heavier stuff, like oxygen, sulfur and a few more elements upto iron\n3) the bigger stars of the first and later generation explode at the end of their life, when there is no longer enough fusion going on in their cores for lack of elements to fuse. The supernova explosions produce a lot of neutrinos. Neutrinos are capable to transmutate elements into others. In this proces all the elements are produced even the ones heavier than iron.\n\nHow do we know this?\n\nThese three processes can be modeled and calculated on computers. These models give predictions on the amount of helium and other elements produced in the Big Bang and in supernovae. These predictions can be checked against the actual abondance of the elements in stars, in the solar system and in the earth's crust.
172495
Mintaka or delta Orionis is a massive O star.  These stars are roughly 20 times the mass of the Sun.  In a short few million years after the star is born it will die in as supernova.  The remnant of the supernova will be either a neutron star or a black hole.  In some cases a supernova can completey annihilate a star and then leave nothing behind.\n\nMintaka is likely just 1 million years old so it will be some time before it dies.
842282
All kinds of answers.  A red supergiant will go supernova, then leave you with either a neutron star or black hole.\n\nA red giant turns into a white dwarf.
1109098
Neutron stars are the remnants left behind when large stars reach the end of their normal "lifespan" and go supernova.  During the supernova explosion, the core of the star collapses to a very small body just a few kilometers across.\n\nMaxwell's equations for electromagnetism imply that a quantity called magnetic flux is conserved in most processes.  This is measured in units of Gauss per square centimeter.  Gauss is the unit of magnetic field strength.\n\nAs the core of the star collapses, its surface area decreases.  Because of the conservation of magnetic flux, the flux through the surface has to stay constant, so the magnetic field strength has to increase to compensate for the shrinking area.  This is sometimes referred to as "fossilization" of the original star's magnetic field.\n\nThe sun is about 1.4 million kilometers across.  A neutron star with the same mass would be about 50,000 times smaller.  Because surface area varies as the square of the diameter, the surface area would be about 2.5 billion times smaller, so the magnetic field would be 2.5 billion times stronger.\n\n(Note, though, that the sun will never turn into a neutron star because it does not have enough mass.  Only stars above the Chandrasekhar limit of about 1.44 solar masses can become neutron stars.)
543
The temperature in a supernova can reach 1,000,000,000 °C.
534669
After a star dies, there is still some residual heat left over. That heat makes the star (white dwarf or neutron star) glow, even though it is not producing any energy. Eventually, the star cools off and does indeed simply become a hunk of ash, which we call a "black dwarf." \n\npeace
566766
A Supernova....i guess.
579859
I assume you mean "star" and not "sun", as in OUR sun, in the first question.  In that case, a supernova is essentially the spectacular explosion that occurs when a star of a significant sized mass ends its life.  IN that case, all the elements with a periodic table number higher than oxygen are created.  In addition, the remaining core of the dead star becomes so dense, that it creates an object that even light can't escape.  This object is now a black hole.\n\nOur sun is not big enough to supernova, therefore it will just die out and become a black dwarf when it is dead.\n\nDefinition from the Big Wiki...\n\nhttp://en.wikipedia.org/wiki/Supernova
824677
The burned out centre of a low mass star is a white dwarf. It's a hot ball of carbon and oxygen, though too cool for thermonuclear reactions to occur. They're about the size of Earth and are too dim to be seen with the naked eye.
310303
Usually what happens is a large event such as a supernova will destroy an old star, kicking out elements. Here's how it's believed to have happened before this solar system was formed, since it's believed that the sun is only a 500 million years older than the planets:\n\nWhen a star is about to die, its last stages of life consume a lot of different materials (this is assuming this star is large enough to create a supernova).  When it runs out of hydrogen, it begins to fuse helium, when that runs out, it goes to lithium, then on down the periodic table, until iron, which requires too much energy to fuse, and the fusion within the star ceases.  What happens here is tight . . . lets establish this first:\n\nStars are composed of mostly hydrogen and helium, little bit of lithium, and much much less of the heavier elements . . .  \n\nWhen the iron is left to fuse and it can't be done, the internal pressure from the core, which is generated by fusion, is lost, and the top shell of the sun is left to be supported but, since the fusion pressure has ceased, there's nothing to keep it up, and the outer shell of the star collapses.  This massive collapse of all that material to the leftover core compresses the inward falling material, increasing pressure and when that material hits the inner core, it 'bounces' back out violently, releasing massive amounts of energy, shooting the entire outer portion of the star into space. This is the moment in which heavy elements are made, in supernova events. The universe at one point did not have much by way of heavy elements, but as more and more stars collapse and supernova, they create more and more heavier elements; the origin of the diversity of the periodic table is here.\n\nFrom this you could assume, that as the universe gets older, stars are going to be creating and spitting out more and more heavy elements, and since stars cannot really use heavier elements to fuse, the number of stars over billions of years will slowly start to decline.
278786
The white dwarf supernova or a Type I supernova can occur in any binary starsystem where the stars are of low enough mass to form white dwarfs and are close enough to each other.\n\nThere are two theories behind the Type I supernova. One involves the collision of two white dwarfs and the other a white dwarf near the Chandrasekhar limit. \n\nThe binary system is a common configuration. We need two stars of low mass. Not too low or they will not become white dwarfs for hundreds of billions of years. Too massive and the stars explode in Type II supernovae. After they have gone through their evolution as red and yellow dwarf stars and through their short life as red giants, two white dwarfs remain. They slowly move closer and closer and finally merge. The combined mass of the two now reach critical and the entire object explodes as a violent nuclear bomb. Type I supernovas are more powerful than Type II where all the explosive energy comes from gravitational crunching as the stars core collapses at a quarter of the speed of light.\n\nIn the second theory a white dwarf in a binary system may be extremely close to the critical mass that would have turned it into a neutron star (1.4 times the mass of the sun). If such a white dwarf where to accrete some mass from its companion it could be pushed over the limit (the Chandrasekhar limit) and collapse. The white dwarf may then either collapse into a neutron star or annihilate itself in a supernova event. \n\nThe Type II supernovae, which are more common than Type I, are caused by the catastrophic collapse of a star atleast 8 times more massive than the sun. After the event either a neutron star or, for more massive stars, a black hole remains. Type II events have very characteristic spectral lines as the explosions create every known element up to Uranium. Type I events have extremely weird spectral lines where there isn´t even a hydrogen line suggesting that it wasn´t a star, rather a stellar remnant, that caused it.\n\nA common nova is also caused by a white dwarf in a binary system. Here the white dwarf (which is much lighter than 1.4 times solar) again gobbles up some gas from its companion. Hydrogen builds up on the surface of the white dwarf until it is enough to start nuclear fusion once more. The hydrogen is blasted off and the whole process begins again as the white dwarf remains. Novae are then quite common and several occur each year. They are not as luminous as supernovae so you usually need a telescope to see them.