how the black hole happens in the universe?
443941
Even a simplified answer to this is very complicated, so bear with me...\n\nHopefully by now you've learned in school about how everything is made of atoms, and that atoms in turn are made up of smaller particles such as protons, neutrons and electrons.\n\nNow ask yourself:  How come I can stand on the ground?  Why don't I fall straight through the ground to the center of the earth?  What keeps gravity from "mushing" everything together, even electrons and protons?\n\nThere are four Fundamental Forces that we know of in the Universe.  The Fundamental Forces are the "rules" by which all the matter in the Universe interacts with each other.  The four that we know of are:  Gravity, the Electromagnetic Force, the Weak Nuclear Force and the Strong Nuclear Force.\n\nAll the matter in the universe has Gravity as a force, and Gravity is always a "pulling" force; things are always attracted to each other by Gravity.  Gravity is also a very long-reaching force; gravity holds the planets in orbit around the sun, holds the sun and other stars together in a galaxy; and Gravity even acts between other galaxies.  Gravity is a force that reaches all the way across the Universe.\n\nThen there's the Electromagnetic Force.  This is what makes electricity and magnets work.  The Electromagnetic Force (or EM for short) is actually much, much stronger than Gravity, but it works over a much, much shorter distance than Gravity does.  EM is also a "two-sided" force; there's a positive and a negative.  In magnets they're called "north" and "south."  Two charges that are opposite -- positive and negative -- attract each other, while two charges that are the same -- say, negative and negative -- repel, or push each other apart, like when you put the south poles of two magnets together, they want to push apart.\n\nAtoms are made up of protons (which have a positive EM charge) and electrons (which have a negative EM charge).  The protons are all at the center of the atom, while the electrons spin around the outside, making an electron "shell."  Since two things of the same charge repel each other, when two atoms come near each other the negative charges of their electrons push them away from each other.\n\nSo the reason you stand on the ground, why Gravity doesn't pull you down to the center of the earth, is because the electrons in the atoms of your feet are pushing against the electrons in the atoms in the ground.  And since the EM force is much stronger than Gravity, the EM force holds you up and keeps you from "mushing" into the ground.\n\n...Okay, what does this have to do with black holes?  I'm getting to that.\n\nMaybe you've learned in school that our solar system -- the earth, the other planets and the sun -- started out as a huge cloud of gas and dust.  Over billions of years Gravity pulled the atoms in this cloud closer and closer to each other, until they started condensing ("mushing" together) to form the earth, the planets and the sun.\n\nThe sun, you know, is not a solid ball, like the earth is.  It's a huge ball of gas, mostly hydrogen.  So, why doesn't Gravity mush the sun smaller until it becomes a solid ball?\n\nThe reason why is the same reason the sun shines.  The sun is about a million miles across.  That's a really, really huge amount of hydrogen.  Now, Gravity does pull the gas on the surface of the sun down towards the middle; so the atoms on the surface of the sun "fall" down towards the center.  That's half a million miles, which is a long way to fall for anything, even a hydrogen atom.  So when the hydrogen gets to the center, the weight of all the gas above it is so huge, that the atoms get pushed together really hard; hard enough to overcome the negative electrons on the outsides of the atoms.  The hydrogen atoms get "scrunched" together to form a different kind of atom --
1166146
Yes........more or less. A Black hole is a small view of what the universe as a whole will be like billions of years from now.
1075485
A black hole is the remain of a star which has become extremely small with an enormous mass. Therefore its gravity is also extremely high, and the black hole draws everything around it into its body. The attracted mass becomes part of the original mass, and, thus, the gravity of the black hole increases steadily. As yo know, the name black hole comes from the fact that its gravity is so high that the mass retains even the photons, i. e., the particles of light, for which reason the black hole cannot be seen.
1135151
As matter spirals into a black hole, it speeds up more and more until it approaches the speed of light, most researchers agree. The matter -- stars, gas, dust -- becomes superheated, and is called plasma. \n\nBut not everything heading toward a black hole goes in. Some energy is squirted out in two opposing jets, along the axis of the black hole's rotation. \n\nAstronomers have detected these ejection jets in radio waves and X-rays. They suspect that the infalling matter and the outflowing energy are related, all having to do with the violent interactions that occur right where matter reaches the point of no return, a sphere of influence known as a black hole's event horizon.\n\nStrong magnetic fields play into this interaction. The research  the scientists combined data about plasma swirling into a black hole with knowledge about how gravity and magnetic fields would affect it.\n\n"In this case, jets of pure electromagnetic energy are ejected by the magnetic field along the north and south poles, above the black hole," said David Meier, an astrophysicist at NASA's Jet Propulsion Laboratory who worked on the study. "The jets contain energy equivalent to the power of the Sun, multiplied ten billion times and then increased another one billion times."
1158151
you're thinking of a worm hole. a black hole will, as far as we know tear things apart to as it takes them to a different part of our universe, which doesnt make sense because nothing can escape from them. Anyway, a worm hole, which is theoretical -mostly- is like two black holes connected at their vertex's. think of the universe as a thin sheet of paper. one black hole is is on the right side, and another on the left. fold the piece of paper so that the black holes are lines up. instead of traveling from point A to point B, you just go through space in manner of speaking from point A to point B "just like that". there really isnt any just like that, but that's as best i can describe it with out actually showing you. sorry if this makes no sense.
660648
A Black hole is formed when a giant star (one thats many many times bigger than our average sized sun) burns up its gaseous energy sources(hydrogen) such that it can no longer sustain the nuclear reactions on its surface. As a result all the massive amount of matter it holds ,pulled by massive gravity collapses towards the center and results in what is called a supernova explosion. However the dense core of the star remains holding alot of matter, say a few billions the time of the mass of the sun but only stretching to a very tiny fraction of the star's original size. This core has so much gravity acting towards the center such that ,nothing including light can escape from it. THIS IS CALLED A BLACK HOLE!\n\nAs of their relevance to US!!! \nWe know black holes exist from the Quasar & Pulsar phenomenon mainly detected by radio telescopes, First, in the distant future where space travel will take us into very deep space, say towards the center of our Galaxy, space travellers must be able to avoid the Event horizon, otherwise they will be sacked ino it.\n\nSecondly, massive gravity seems to bend light that travels near it thus distorting the apparent location of objects whose light has to pass near black holes to reach us. This will have to be considered by astronomers observing distant stellar bodies\n\nLastly, its thought that at the center of our Galaxy-the milky way,there is a giant Black hole and its gravitational pull makes the star systems around it(eg the solar system) to revolve around it in a spiral manner because systems closer to the center rotate faster than the ones further out. So I guess, this particular blackhole is of the same relevance to the solar system as the sun is to the earth!::::::Thankyou
432010
a black hole is a region of spacetime from which nothing can escape because of gravity, and yes, they exist.  this was not a very detailed answer, but i may write more later.  you can follow the link below.\n\nhttp://en.wikipedia.org/wiki/Black_hole
180025
yes, the big bang sent out matter, but black holes draw it in, therefore the two are different, no matter what reference they are taken in.  However, black holes have points of singularity, as did the big bang, right at the point of formation the universe was in singularity as time didn't exist. On the other hand, the big bang was seen as formation, and black holes are seen as destruction, sort of like ying and yang.
430912
One theory is that every galaxy has a super-massive black hole at its center, which is slowly drawing all its stars into it. Plus the galaxies are being drawn into each other. If this continues, all matter will ultimately be drawn into one enormous black hole, which will collapse into itself and then...BANG! It starts all over again. Of course, there will be no humans around to witness it. Our star would have been destroyed long before that...
35446
a black hole is an area of space-time with a gravitational field so intense that its escape velocity is equal to or exceeds the speed of light.
264247
It creates a black hole.
790112
A black hole is an object predicted by general relativity with a gravitational field so strong that nothing can escape it — not even light.\n\nA black hole is defined to be a region of space-time where escape to the outside universe is impossible. The boundary of this region is a surface called the event horizon. This surface is not physical, just an imaginary boundary. Nothing can move from inside the event horizon to the outside, even briefly.\n\nThe existence of black holes in the universe is well supported by astronomical observation, particularly from studying X-ray emission from X-ray binaries and active galactic nuclei. It has also been hypothesized that black holes radiate energy due to quantum mechanical effects known as Hawking radiation. \n\nHistory\n\nThe concept of a body so massive that even light could not escape was put forward by the English geologist John Michell in a 1784 paper sent to the Royal Society. At that time, the Newtonian theory of gravity and the concept of escape velocity were well known. Michell computed that a body with 500 times the radius of the Sun and of the same density would have, at its surface, an escape velocity equal to the speed of light, and therefore would be invisible. In his words:
286980
Black holes do not give off any light, so they can't be seen directly.\n\nWhat we can see is the EFFECT of the black hole.  \n\nOne effect is caused by the fact that massive objects will bend light as it passes them - this is called "Gravitational Lensing".  \n\nAs a result, if we detect light from a distant star that is distorted in the specific pattern of gravitational lensing, we can deduce that there is a dark, massive object at the center of the distortion.\n\nAnother effect is produced when matter that is pulled into the black hole.  Once matter or light gets closer to a black hole than the critical distance (the "event horizon") it vanishes into the black hole and is never seen again.  But, matter NEAR the black hole that is falling into it will give off light or other radiation as it is destroyed by the black holes gravitational force.  This radiation includes bursts of X-rays, which we can detect.\n\nThe first black hole that was detected is called Cygnus X-1 (it is an X-ray source in the constellation of Cygnus, the swan).
767654
that's one theory.a black hole was the result of the big bang in every universe.it eventually swallowed other black holes to expand the universe.every known universe has a black hole in the center.if they become active they could destroy the universes around them as well as the universe they reside in.this would include our own universe.
1055719
Ok, first things first.  This situation cannot occur.  Such a string does not exist and probably cannot exist.\n\nA black hole is actually not a "hole" so to speak.  It is a super-dense core.  The denser an object is, the stronger the force of gravity that this object exerts on all objects around them.  That means that even you or I exert gravity on everything around us.  However, our own gravititational force is so weak that we don't even perceive it.\n\nNo one that we know of has gone near a black hole.  The nearest known black hole is 1600 light-years away.  One light year is approximately 6 trillion miles.  So the nearest black hole (that we know of) is approximately 1600 times 6 trillion miles away, or 9.6 quadrillion miles away.\n\nAnyway, I don't want to complicate it too much.  This is stuff you would learn in a high school or college physics class, and my guess is that you have not taken such a course yet in your life.
345783
Yes, black holes can move in space,\npartially due to the law of conservation of momentum (and inertia), if it was moving before it became a black hole, it will continue to move,\nand a black hole is affected by gravity like other objects.\n\nIt has been theorized, and some experimental evidence confirms, that larger (super-massive) black holes reside within many galaxy's centers.  As we can observe, galaxies can, and do, move around...thus if they have a black hole at thier center, the black hole moves as well.
1952
A black hole is formed by a star, most likely a neutron star, collapsing into a space a few kilometers across. It is made up of the same thing a neutron star is, mainly hydrogen, helium, oxygen, and a few other elements. Once the black hole forms, it can absorb large amounts of matter from surrounding stars.