where does space end?
954418
It doesn't, the universe is expanding so fast there's no end to it.
1009683
Hey I don't wonder about space rather its quite a bit interesting to wander in the space.....Its known journey began from Big Bang.....Our Universe is just 156 billion light years wide.....so keep wandering beforing it comes to an end.....
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
660305
space doesn't really have limits that we'll ever reach, but yeah there are MANY others planets and solar systems in our galaxy, let alon the other 51351351354 (to the 80 trillionth power) galaxies. it's infinite.
1134920
It depends on which space you are referring to. Common people refer to space as the void in which everything else is contained. This space is infinite.\n\nScientists commonly think of space as a fabric acting like a balloon which is being blown into and expanding. At a given moment, this three-dimensional space of our universe is finite (having an end), although two-dimensional travel through space fabric is thought to be curved (and therefore endless). This balloon that scientists refer to as our universe containing what they call space is defined as being one of many universes moving in a larger multiverse. This multiverse is very similar to what most people would call space and may well be endless.\n\nIn sum, lay space never ends, but scientific space does.
299945
Space is infintie.  The universe,however, is not.
26073
To say universe is infinite is partly correct because nobody has ever found its corner or a boundary. But some ppl think that if u set out in one direction ina hope to get to some end/boundary one day, you might end up turning a full circle without realing so, because space has some really small and complex curves much beyond our comprehension with our present knowledge and intelligence
674188
well, spacetime does not seem to end, and nothing is "holding up" spacetime.\n\nthe universe is not infinite. the universe is finite yet has no edge and no center. it may be something like the two dimensional surface of a sphere. nothing inside or outside the sphere exists for the two dimensional surface.\n\nalso, i have something for you to think about. the radius of observable universe is about 46 billion lightyears, yet the universe is 13.7 billion years old.
1086035
This question  has been asked before, hasnt it? Sounds familiar.\n\nSpace is never ending, you can leave the Milky Way and you will enter another galaxy, depending on where ure exit point is.
9649
It does not end and its growing, before you try tackling such a question, answer the micro-level questions of the same kind.  The universe encompasses all that exists, and by default then, it is largely unknown.  We don't know where the universe ends, and all evidence points to it being endless and growing, therefore we make a conclusion based on a portion of the information actually needed.
320913
Yes, space is big. I mean really really big. You can't possibly imagine how absolutely huge it is. Also it's dark, cold and empty for the most part.
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...
612672
well unfortunately, outerspace is a whole lot of nothing, so it doesnt have to take up any space.  granted there are molecules floating around out there, but for the most part there isnt any matter in empty outer space
1108097
Everywhere and nowhere, Like asking where does a circle end and begin?
18267
Space, the final frontier.
474119
Space does not come in particles.\n\nThere is no aether.\n\nQuantrons do not exist.\n\nBut apart from that I'd say you're probably almost right.
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