If the universe does end somewhere eventually....what would be beyond that then?
154209
It doesn't end.  It goes on. If you took a line and ran it in any direction off the planet's surface it would just keep going into infinity,  if you could freeze time and walk on that screen,  you would never get to the end.  There is no end.
1084780
Milliways?\n\nAnyhoo...\n\nExcuse the geek humor.  It depends on what you mean by the end of space.  If you mean the destruction of the universe, there's a lot of theories out there.  If you mean the physical edges of the universe, there is nothing, no vacuum.  The universe is all that exists, there is nothing outside it.  It's a difficult concept to visualize sometimes.\n\nSome end-of-the-universe theories include the big crunch where the outward movement of the universe reverses itself and returns to a common origin; the opposite of the big bang.  Opposite of the big crunch is the quiet freeze, where the universe keeps expanding, planets drift so far away from each other, entropy takes control, all energy is slowly expended and the universe drifts into a quiet soft end.  Those two theories depend on the cosmological constant.\n\nThere's also a theory where many of our cosmological constants which define the laws of physics and allow for the universe to exist could change and matter simply crumbles at its most basic level (even quarks, which are base atom components, would fall apart).  Another somewhat worrying theory is that physicist working in supercolliders could set off a quantum vacuum collapses, this off course assumes that the quantum vacuum is not at is lowest stable state which is unlikely.\n\nOne of my favorite theories is the result of M-theory, otherwise known as Brane theory.  Brane theory suggests that the laws our universe is governed by a "membrane" created from supersmall (Planck length, 10^-35 meters) one-dimensional strings.  It's easiest to think of the piano, music is created but is not tangible, it is created from vibration of strings.  The way this membrane is folded creates the laws and constants that govern our universe.  There could be, literally millions of membranes and millions of universes.  The theory goes onto suggest that our universe was created from the collision of two membranes; and so too could it end that way.\n\nThere's a lot of different theories, if you're interested in end-of-the-world/end-of-the-universe theories I'd recommend you visit Exit Mundi, linked below.
311305
how do you understand anything?  We can't understand everything there are things beyond our comprehension.  Try to think about this, does space end?  Is it infinte?  what is infinite?  You kno?
1035265
Which is the end of expanding universe? If any end exists, what will be behind this end?\n\nBefore we can address that question, we must first define universe.  \n\nThe word universe denotes all space and everything (matter, energy) contained within it.  The prefix uni means one.  The root verse means word, carnate message, meaningful substance, matter.  Questions regarding our universe persist today.  Does it have a beginning and end, or does it go on forever and ever?  Is it linear or curved?  If it has limits of length or curvature, then what lies beyond the Universe?  If something lies beyond the Universe, then can’t we accurately call that the Universe?\n\nSome lay people and some scientists conceive of the universe as infinite space.  Others define the universe as finite, or limited (perhaps curved), space.  Still others incorporate the elements of matter and/or energy into their definition of the universe, as opposed to the space beyond matter and energy.\n\nGiven these concepts of our universe, some scientists conclude that the “totality of space could be infinite. Shrink an infinite space by an arbitrary amount, and it is still infinite. (Scientific American March 2005).”  \n\nAs to the notion that we live in an ever expanding universe, moving away from every other universe on the fabric of space-time, some scientists are careful to point out that “\n\nAndromeda, our nearest large galactic neighbor, is actually moving toward us, not away. Such exceptions arise because Hubble's law describes only the average behavior of galaxies (Scientific American March 2005).”\n\nIn accordance with your supposition that our universe is in another universe, “it has been hypothesized by some scientists that the universe may be part of a system of many other universes, known as the multiverse (http://en.wikipedia.org/wiki/Universe).” Modern astrophysicists talk about multiple "pocket" universes that branch off from one another.  Stephen Hawking points out that parallel pocket universes can have no effect on a real observer inside a single pocket, so, according to Hawking, they are theoretical baggage that should be eliminated from cosmology, the study of the origins of the universe.\n\nSome string theories define the universe as a three-dimensional space in an invisible space having more dimensions. This is, in essence, a universe within a universe.  Our zone, a “braneworld” could periodically bounce into another parallel braneworld.  \n\nThis may create what would appear as a Big Bang from one perspective or a Big Bounce of alternating expanding and contracting universe from another perspective.  Such a cataclysmic event is thought to occur 300 billion years from now, resulting in the rearranging and creation of a new universe.\n\nWhich is the end of expanding universe? That may be determined in 300 billion years, when it stops expanding (like a balloon).  If any end exists, what will be behind this end?  A multiverse void containing other expanding and contracting balloons, referred to as universes, may exist beyond our own.\n\nSteve\n:-D
514185
does the universe end?  no one knows yet.  the beginning of the universe is much better understood.\n\nhttp://en.wikipedia.org/wiki/Ultimate_fate_of_the_universe
568472
There is a general concept that, 'Anything which has a beginning surely has an end'.\n\nHere, i find a small ambiguity in your question. Now, world is something different and earth is something different.World is a state or scene of human existence.\n\n If this is what you meant then surely it has an end. Then question under discussion is how and when. The various probability are as follows :\n\n  -- Short term probability #1: It is thought that the extinction of dinosaurs was caused by the collition with an comet( or asteriod i am not so sure) called apocalypse. Now the collision with a comet is quite a very uncertain event, but isn't impossible. So, if such an event happens, then the life, that is, your world will end for once, and it may be that there isn't a regeneratioin of life after that, though the earth may exist.\n\n  -- Short term probability #2: And the comes, as you have mantioned, the pollution. It is doomed to increase the global temperature to such a level that the polar ice may melt submerge the world. This is called glaceriasion. But though this will eliminate the weaker species, human then, but other forms of life and earth will surely exist.\n\n -- Long term probability #1 : And it is felt that innitially the earth was smaller and all thee  continents were together to form a super continent called Pangeae. Now as the continents are seperate, so it is concluded that the earth is expanding. Just as a bolloon when inflated, expandes to a level and finally bursts, so will earth. This will destroy both life, if it exists then ion earth, and surely our earth. But i have little faith in this philosophy.\n\n -- Long term sureshort event : After about 15hundred million years, our sun will partially exhaus its fuel and expand to a red giant. And this sun will consume the inner planets and the earth. This will seize the existence of earth.\n\n But it must be noted that, it is not like the earth may exist or collapse. Its only that it will seize its existence, as matter has neither a begionning and nor a end. So matter makingf earth will exist, even if earth collapses, that is , seizes to be earth. Though these evenbts are bound to happen, but only 15millionth of your generation may be able to witness the longterm ends, if human generation survives till then. The short term may occur today tomorrow, or not.\n But life on earth is very likely to end only if earth is to end, as life as the property to evolve and adapt.
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.
924189
Maybe.  But the question is hypothetical -- infinity is a mathematical concept, and does not exist in the real world.
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....! ;-)
722611
the universe is constantly expanding although the rate is slowing and never reaches zero.\nexperts believe that the universe is finite yet has no edge, just like the surface area of a sphere. this could imply that if u reached one 'end' of the universe, u would end up on the opposite side or something like that
1051785
You would go until you died of course. Assuming you'd never die, you'd never stop travelling in that spaceship. That's what infinity means. It's hard to grasp that idea, but space never ends...
572071
Stephen Hawking addressed this issue in his famous book " A Brief History of Time" .\n\nHe stated that if the universe continued to expand the density of matter will continue to decrease with a resulting drop in the average temperature of the universe.\n\nHe feels that eventually, ( as in billions of years ), the only things left in such a large and cold universe will be black holes which will "gobbled up" nearly every atom of matter and energy so that it will be a very dark place.\n\nin fact the real endpoint of the universe is unknown, and it may eventually contract as well if there is enough gravity to pull it back together !
574337
There are various conflicting theories about this.Some say universe will keep on expanding.Some say it will be a see saw .Some say it will all end in a big contraction.It's still a open question.
264754
Think of the universe as a giant bubble. Outside the bubble is nothing. nothing exists. no space. no time. Even though there is an edge to the universe, you cant reach it. If you started at the earth and went in a straight line. you would eventually come back to the earth. Also, we are not the only universe. there are other bubles. too. they are in the same nothing as ours. But you could not travel to other universes.
178670
If the universe is infinite, it doesn't mean that everywhere is the center, it means that it has no center. Or, if you mean relative to the existing matter...well, that isn't infinite, and has a defined center.
446086
the cosmos has an end... every star and galaxy will have an and so the universe will end someday and someday.. look on discovery science for details
11829
On one theory, the space of the Universe (as well as its contents) is what's expanding. That theory says the total amount of space is finite, and that finite quantity just gets bigger every second.  What, you might then ask, is outside of space?  There's no outside!  It's like asking, "What's north of the North Pole?"