Wil the conjoining of black holes in the future spell the end of the entire universe?
402813
No, I think it'll take too long for them to join together.  They're generally so far apart that the gravitational pull on each other is very very small.  Besides, the universe is constantly expanding, so instead we'll end up in a position where everything is just cold and the density of matter is very small.  That's just one theory, though.
265923
Yes. The universe is constantly expanding. It is possible we are all being sucked into a massive black hole, far far outside the reaches of our universe which would account for the the expansion of our universe. Additionally, the best competing theory for the start of the universe is the big bang , where everything expands out of one tiny point. It is reasonable to think that the universe could end in the opposite way - The Big Suck, where we get pulled into a massive black hole, just like the one you describe. So yes, I think it's very possible.
437322
The mathematics of black holes shows that they might be able to transport you to another region of space or possibly another universe. However, the mathematics also shows that the connection only lasts for a fraction of a second at a time, and that the link to other universes depends on a specific set of conditions which scientists do not believe to exist. Even if it were likely, however, the strong gravity field of the black hole tears apart any material falling into the hole so it would not come out the other end of the Black Hole looking anything like how it went in, so in other words you would  have to really want to make this discovery because you’re going to die trying.
1081007
Fun stuff, this gravity question. One of the leading hypotheses of the past was that the expansion of the universe would eventually slow, and gravity would then pull all mass back together, resulting in another singularity, and a recurrence of the big bang. \n\nRecent evidence says that this isn't happening. Instead, as the universe expands, the gravitational pull will approach zero. The consequence of this new hypothesis is that the universe will eventually spread itself into nothingness, and as the stars fade and run out of fuel, the universe itself will fade away into cold and darkness. Not that it's something we have to worry about anytime soon.
190845
I believe there are two kinds of black holes. One I'm sure everyone will explain to ya, a great mass so large that light can't even escape it's gravity. But the other kind is theoretical: What if everything in THIS universe came from somewhere else? That is the only way I can explain it, except that somehow we are all headed for it again, to be sucked into it and expel ed into another place which right now is completely void, and this universe would be turned inside-out again.
58597
Recently, scientists are creating theories that saying there are more universes beyond our own. Until we learn to harnass the power of warpholes, black holes, etc. or send things traveling at the speed of light without damaging it, we may never know where space ends.
906367
There is nothing called the end of the Universe. There are three possibilities of the shape of the Universe.\n\nFirst, the Universe might have what we call positive curvature like a sphere. In this case, the Universe is called "closed" and it has a finite size but without a boundary, just like a baloon. In a closed Universe, you could, in principle, fly a spaceship far enough in one direction and get back to where you started from.\n\nThe second possibility is that the Universe is flat. This kind of Universe can be imagined by cutting out a piece of a baloon material and stretching it with your hands. The surface of the material is flat and not curved. You can expand and contract it by tugging on either end. Flat Universes are infinite in extent and have no boundaries.\n\nFinally, the Universe might be "open" or have negative curvature. Such Universes are also infinite in spatial extent and have no boundaries.\n\nThus whatever be the shape of the Universe, there is nothing called a boundary and hence nothing called the edge or end of the Universe.
49948
the same thing thats on this side. new matter is not being formed it is just expanding from the force of the big bang all those millions of years ago. Some scientists say the expansion will eventually stop and the universe will collapse onto itself, and then maybe explode again. All theories so in effect we dont know.
5808
Nobody really knows for sure.\n\nThere's a theory that the universe is expanding in a spherical shape and will continue to expand until it reaches maximum entropy. At that point all of the energy and matter in the universe will be equally distributed and the universe will no longer be able to support life.\n\nThere's another theory that the universe will expand (again, roughly in the shape of a sphere) until all of the galaxies exhaust their kinetic energy. At that point the universe will begin contracting. When the contracting is complete a singularity containing all of the mass in the universe will form and explode in a big bang.\n\nIf you think about it, if the latter theory is true then it's possible that the universe has expanded and collapsed an infinite number of times in the past!
1107409
I do not believe you could ever find the 'end' through the knowledge we have today.  This would require us to exceed the speed of light, obtain infinite energy, warp space as a blackhole does, etc.  I do believe there are infinite universes.  Our universe exists as a 'point in infinitely dimensional space.  \n\nOur universe was created from the chaos of the lawlessness of nothingness, we could have been 10 billion times larger in mass or the size or total mass of an atom.  We may be able to difine how much mass the universe has, but possibly never the size.\n\nIt would be like defining the size of a dimensionless point.
1003903
There are three possibilities, depending on solutions to the equations of General Relativity and how much mass is in the universe:\n\n1. the universe will stop expanding and then collapse in on itself to a big crunch\n2. the universe will keep expanding for ever\n3. the universe will reach a "stable size" - neither collapse nor expand forever\n\nNo-one knows which.
51258
The Universe was created by an event known as the "BIG BANG" and has been increasing ever since.  There are many theories about what the universe will do in the future Ex. ever increasing, saddle shape, or will is contract and implode creating a massive black hole.\n\nVery cool and interesting stuff.\n\nCheck this site for more on the "BIG BANG"
313044
When studying Astrophysics in Year 12, we learned that the Universe was created from pure energy and that it would probably end as a load of energy. So that made me think that maybe there have been other universes before that imploded as the 'end of the world' which then in turn created new universes. So it's possible that at the 'end' of this world, a new world will be created in its place, as the energy that will result has to go somewhere! (energy is neither created nor destroyed, it is merely converted).\nOf course we'll probably never know for sure....! ;-)
215344
First let me say that I don't believe in a literal judgement. However there is a common vision that many religions seem to share about the endtimes. Namely the appearance or knowledge of  "black holes".\n\nChristianity: "The sun will be darkened. (Matthew24 and elsewhere)\nJudaism: "The sun shall be turned to darkness". (Book of Joel, and elsewhere)\nHinduism: The Night of Brahma. Where "The cosmos collapses into itself, and all phenomenal being is returned to a state of pure potentiality".\nBuddhism: "Nirvana". Literal Sanskrit translation is "The going out (extinguishment) of the light".\nIslam: "When the sun is folded up, and the stars turn dim and scatter". (Surah81, and elsewhere.\nHopi: "When the sun turns black". From the prophecy of the Blue Star Kachinas dancing in the plazas.\n\nAll of these prophecies seem to find something significant about the time when people are made aware of the fact that for every billion stars that die outright, one evolves into a black hole. By the way, the term "Black Hole" was coined in 1966.
722109
It is possible that black holes are the catalyst behind the big crunch, which is the end version of the big bang. Once all of the black holes in existence collect enough matter and energy, they could combine gravitationaly to create one massive black hole that simply repeats the big bang over and over.\n\nBlack holes do not reflect anything, so I don't believe the ignition of the sun was caused by a black hole. \nBlack Hole Info:\n1.They represent matter/energy in its purest form. (All matter and energy is coalesced into one single state of energy)\n\n2.They represent the possible end of our universe.(big crunch)\n\n3.They are the single largest gravitational entity theorized to exist.\n\n4.They are one of the few places that prohibit the propagation of light, so no reflection.\n\n5.The laws of nature at a black hole are completely different from anywhere else in the universe.
696294
Not believed to max out as you say.  The diameter of the event horizon will keep expanding as new material is drawn in.  Stellar black holes are believed to be only a few miles across, while super-massive black holes comparable to the size of the solar system are believed to exist at the centers of some galaxies.
193032
The above answers are interesting but, modern physicists speak extensively about 'multiverses'.  So, does one universe end at the edge of another? or, do they 'co-exist' in space and time? OR??????