What is really black hole??????????

1. 57

   nsabari4posted 12 years ago

   What is really black hole??????????
   
   is it really true that if we enter a black hole,we will go to another galaxyy or some other dimension

   replyreport
2. 72

   lburmasterposted 12 years ago

   We still don't know. Mainly because we don't have anything that will survive entering a black hole. When going into a black hole, everything is stretched. It's pulled and morphed so the hole can break down the atoms. Then we don't know what happens to it or where it goes.

   replyreport
3. 57

   nsabari4posted 12 years ago

   its very interesting........how does a black hole develop......???

   replyreport
   1. 58

      arjunctrposted 12 years agoin reply to this

      Black holes are expected to form when very massive stars collapse at the end of their life cycle.

      replyreport
4. 61

   nishlaverzposted 12 years ago

   One theory is that they could be gateways to other galaxies. This however is probably only science fiction.
   
   What do we Know about Black Holes?
   Though the term 'black hole' was only coined in 1967, the study of objects that are so large that even light cannot escape, goes back to the late 18th century. It was the development of Einstein's General Relativity that helped define the properties of Black Holes.
   
   Black holes are thought to be objects of large density who's gravitational pull is so strong that even light cannot escape it. Because light cannot escape they are hard to detect.
   
   Supermassive Black Holes
   What is a Supermassive Black Hole?
   This type of Black Hole is thought to be the largest kind. They are thought to exist at the centre or most if not all galaxies including our own Milky Way.
   
   How do they form?
   They could form from smaller Black Holes that started out as a star that went nova as Black Holes grow as they take in more matter.
   
   They could have been formed at the time of the big bang and as such could be what is known as a Primordial Black Hole. This idea fits with them being at the centre of a Galaxy as it could be the Black Holes Gravity that turns the Galaxy and moves it around the Universe.
   
   Extract from my Hub
   
   http://nishlaverz.hubpages.com/hub/Is-t … Black-Hole

   replyreport
5. 58

   arjunctrposted 12 years ago

   A black hole is a region of spacetime from which nothing, not even light, can escape.The theory of general relativity predicts that a sufficiently compact mass will deform spacetime to form a black hole. Around a black hole there is a mathematically defined surface called an event horizon that marks the point of no return. It is called "black" because it absorbs all the light that hits the horizon, reflecting nothing, just like a perfect black body in thermodynamics.Quantum mechanics predicts that black holes emit radiation like a black body with a finite temperature

   replyreport
6. 0

   Infinite712posted 12 years ago

   "is it really true that if we enter a black hole,we will go to another galaxyy or some other dimension"
   
   No, whatever so-called "black holes" actually are, there's no way that anything like that can ever happen. That is completely impossible.
   
   Whenever astronomers deal with a phenomena which is "unknown", then they label it as 'dark' or 'black'. (dark matter, dark energy (which is a reification of energy), black holes, etc.)

   replyreport
7. 72

   lone77starposted 11 years ago

   A black hole is a super-dense mass that has such a strong gravitational field that light cannot escape. So, while the surface of the mass might have color in the ordinary sense, the gravity does not let us receive that color.
   
   Black holes are formed in a couple of ways, by our current understanding. One is by the coalescence of stars by collision and gravity. This can happen within the center of a galaxy where stars are jammed into a relatively tight space.
   
   Another way black holes are formed is by the explosion of a supernova. The outer layers of a very massive star are ejected at fantastic speeds, perhaps as much as 10% of the speed of light, while the center is pushed downward, compressing it even more. If this core is massive enough, it will form a black hole. With less mass, it might merely form a neutron star.
   
   Black holes as wormholes doesn't sound likely because the intense gravity would rip you and your ship to subatomic particles (electrons, protons and neutrons). If it did eject those particles at some other location in the universe, they wouldn't do you much good, because they would never again resemble your body or your ship.

   replyreport