Can black holes move in space? And what causes this movement?
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.
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
573101
Small black holes will have larger tidal forces. They also have have a larger amount of Hawking radiation. The radius of a black hole is determined by the mass of the black hole. Larger black holes are typically at the centers of galaxies. Smaller black holes are more randomly positioned.
1081457
No.  Light can orbit inside a black hole right below the event horizon provided it's trajectory was perfect when entering the black hole. If not the light always head towards the singularity. Yes light is attracted to a black hole due to the complete and absolute curvature of space time located there. Light does not need mass, it just follows the curvature of space-time into the black hole.
1138674
A star is stationary object and a black hole is a result of dying star. Black holes are stationary objects.\nThey posses a great gravitational force. It is so great that it can even suck in light.\nDue to such gravitational force it makes objects near it to revolve around it with tremendous speed.\n\nThe closest black hole to earth lies just 1,600 light-years \n(1 light year = 9.4605284 × 10^15 meters ) from Earth on the way to the centre of the Milky Way in the direction of the constellation Sagittarius.\n\nBut if you want to test the above facts and experience it yourself then just wait till sun becomes one black hole!!!! (after around 5-6 billion years)  (Sun can also become neutron star or nebula so may be you cannot experience it!!)
387898
Black holes are food for my brain and curiosity. I love the subject it is so interesting!\nBackround info: A black hole is a concentration of mass great enough that the force of gravity prevents anything from escaping from it except through quantum tunneling behavior. The gravitational field is so strong that the escape velocity near it exceeds the speed of light. This implies that nothing, not even light, can escape its gravity, hence the word "black." The term "black hole" is widespread, even though it does not refer to a hole in the usual sense, but rather a region of space from which nothing can return. Theoretically, black holes can have any size, from microscopic to near the size of the observable universe.\nBlack holes are predicted by general relativity. According to classical general relativity, neither matter nor information can flow from the interior of a black hole to an outside observer. For example, one cannot bring out any of its mass, or receive a reflection back by shining a light source such as a flashlight, or retrieve any information about the material that has entered the black hole. Quantum mechanical effects may allow matter and energy to radiate from black holes; however, it is thought that the nature of the radiation does not depend on what has fallen into the black hole in the past.\n\nThe existence of black holes in the universe is well supported by astronomical observation, particularly from studying supernovae and X-ray emissions from active galactic nuclei.\nMy answer 1)time travel when you, or in this case an object, goes fast the world goes slow. and if something, a black hole, is going, or sucking, fast enough, the world around you will eventually begin to reverse.
473814
General relativity (as well as most other metric theories of gravity) not only says that black holes can exist, but in fact predicts that they will be formed in nature whenever a sufficient amount of mass gets packed in a given region of space, through a process called gravitational collapse. For example, if you compressed the Sun to a radius of three kilometers, about four millionths of its present size, it would become a black hole. As the mass inside the given region of space increases, its gravity becomes stronger — or, in the language of relativity, the space around it becomes increasingly deformed. Eventually gravity gets so strong that nothing can escape, an event horizon is formed, and matter and energy must inevitably collapse into a singularity.
5021
yes, space-time gets warped/bent with mass.  This has been used to try and explain gravity somewhat, but with objects like planets, it doesn't happen that much.  The 'strings' from string theory and black holes bend space-time considerably.  black holes are basically singularities the size of a baseball that are as heavy as a planet or star... that's how dense they are.  It's basically so dense that it's just protons and neutrons smashed together, and considering that most of atoms are usually empty space, this is very very tightly packed, which is why there's so much gravity and the escape velocity to get out of a black hole is so great that even light isn't fast enough to get out.  Cosmic strings (the ones froms string theory) are also this dense and they are also said to bend space-time around themselves.  If you're interested in this, I would read "The Elegent Universe" by Brian Greene.  It will explain it a lot better than I can here.
481008
Yes, they have gravitational pull strong enough to pull in light, but there is one known thing that can escape, thermal radiation. Steven Hawking's book a brief history of Time. There are many theories about black holes, but yes they exist.
596967
A black hole is a concentration of mass great enough that the force of gravity prevents anything past its event horizon from escaping it except through quantum tunnelling behaviour (known as Hawking Radiation). The gravitational field is so strong that the escape velocity past its event horizon exceeds the speed of light. This implies that nothing, not even light, inside the event horizon can escape its gravity. It is, however, theorized that wormholes can let one exit a black hole. The term "black hole" is widespread, even though it does not refer to a hole in the usual sense, but rather a region of space from which nothing can return.\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.
971309
The best way to know that you've moved inside the event horizon of a black hole is by finding that you can no longer communicate with the rest of the universe. For instance, if you were in a probe launched by a nearby mother ship and passed inside the event horizon, all radio contact with the mother ship would be totally lost because nothing can escape from inside the event horizon.
389263
stephen hawking has said that balck holes indeed behave like black bodies, emitting some radiation, usually gamma and x rays. \nAlso, when matter falling into the black hole causes the black hole to spin. This creates a magnetic field like that of Earth's, emitting the high energy particles in the form of jets through the north and south poles of the rotating blackhole.\n\nSo, some kind of info might be released from a black hole, thats if the spaceship can detect these signs.
1013973
Gravity can move bend and obsorb light ie. black hole
408054
This is not a cheap answer because this is a fact: No one knows yet where black holes lead to. Science has not yet found an answer to your question. \n\nIf you want more info on black holes, visit www.nasa.gov
403857
yes, black holes really exit.\n\nhttp://en.wikipedia.org/wiki/Black_hole
525444
The Black holes have so much gravity that they can suck up the planets with no power at all. You can imagin by this that not even light can escape through them. Black holes could be 3-D. \nSome Scientist thinks that the black holes can be used for travelling to other galaxies. We can travel through the Black holes at the speed of light to other galaxies within a very less time.
209721
Black holes are a theory, we suspect that some anomalies in space are black holes. White holes are desired by our nature to balance the negative energy of black holes. However the Begy concept of gravity as an external force acting on our universe more than compensates for the negative E of black holes and even predicts a source of energy that is constantly flowing into the universe which can only be detected as the force of gravity. According to the Begy theory, black holes would be anchors in time and space where the gravitational force is neutralized.