universe consists of vast streach of space .it is known that universe is expanding.how  you add space to space
343672
It's the same concept as with a sponge. Take a dry sponge, never been used before...now soak up a small puddle of water on the counter. Notice how it gets bigger? The sponge is the same size...just with expanded material now. Space is relative.
1006731
the question is, what is there to block the universe from expanding?  The theory of going out one end and coming out on the other would break any and all laws of physics and space that we hold today, which, is a possibility, but not a likely one.  Also, the concept of infinity doesnt need to follow regular laws of mathematics, because infinity is not a number as some poeple have been treating it here.  Infinity is a concept, where infinity means increasing by an infinite amount, as in, ongoing and never ending...it is a concept, not a number.  So, how can the universe go on forever? it may not be able to, but with our current laws of physics, unless there is soemthing with an equal or greater power to stop the space matter and such that is expanding in light years, then the universe will never stop expanding.  Before the "big bang THEORY", (again, theory, not law as someone was using it to make their point) thee must have been some type of area occupying what our current universe is eating up, since again, by our current laws, you cannot make something out of nothing, so, my thought would be that the universe will expand as far as the previous area which it is expanding into, because it cannot expand to make something our of nothing at all, or so our current laws say...
313515
The universe and space aren't the same thing. The universe was CREATED in space. Before the creation of the universe, it was just space. The universe now occupies space, and yes the universe is not infinite and according to scientists, the Big Crunch theory is the end of the our universe. However, space will still exist because the universe and space aren't the same thing.
980485
The number of atoms in the universe is not decreasing...\nThey are spreading out as the Universe expands...
1176720
Space was created during the Big Bang, the creation event of this Universe. But space is still constantly being created even now, since the expansion of the Universe is now still ongoing and actually accelerating.
1046649
Space is expanding at an accelerating rate, and carrying everything along with it. The energy that causes this is called dark energy. What it is is unknown, but it may be a property of space itself.\n\nIf it was just the leftover momentum from the big bang, it would gradually slow. The fact that the expansion is accelerating means it's something else.
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.....
617822
That assumes the universe has an end, or side.  The currently held belief is that the univers is indeed expanding, but expanding into what we don't know.\n\nThink of it as a baloon.  Wek now that the baloon will expand if we put air into it, however we also know that the baloon has a a side that increases in diameter as the pressure inside of it's surface pushes out.\n\nIn that respect we can not think of the univers in the same way.  We have no finite proof that the unviers indeed has a side.  Therefore we are forced to assume that as the 'pressure' or 'increase of matter' within the KNOWN universe increases, the distances between the planets and stars increases, and therefore the univers must als increase.  \n\nIs there a medium in which we expand? We don't know.  Do we have sides? We don't know.  \n\nHowever to use the understanding of the question you asked:\n\n'How can the universe be infinite if it is expanding' puts one of those theoris at bay (it assumes we have a side.) The act of expansion isn't finite, in fact, it is infinite in it's ability to change the shape, mass, and density of an object.\n\nSimply because the objct pops doesn't mean that the expansion has stopped.  Ever look at what happens to an ameoba when it is filled with water?  The single cell wil expand until it can handle no more pressure and then will pop, however as more and more water is pumped in, even after being burst, the parts will continue to get farther and farther away.\n\nUsing that same analogy, we can look at the universe.  We do not know if we have defined sides, so if we go with that predelection, then w can say that our expansion is finite, ie eventually we will not be able to expand to accomodate the limitations of the sides.\n\nIf we, however, assume that the universe has no side, we can assume that the limitations for that type of expansion do not exist. We will forever expand.
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"
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.
760374
Scientists say it is expanding. If true, that would mean that the universe is not infinite. It also suggests a beginning.\n\nGood question. Reminds me of my childhood imagination. I imagined a brick wall at the very edge of the universe. Then, however, I wondered what was on the other side of that brick wall.\n\nI wonder what the scientists are saying about it? I bet they don't know either.
1076114
Odds are that the universe IS teeming with life.  We haven't been to the universe -- it's very big and most of it is too far away.
1090689
The empty space is not so empty.\nBillions of atoms and much more photons;\n1000 dm3 and 1,000,000 cm3.
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.
727803
The known universe appears to be expanding. This does not mean it actually is expanding.\n\nIt might be gravity, or distortions in space affecting our perception of the universe.\n\nIt might be our misinterpretatons of the observations.\n\nThe observation is, that as we find galaxies farther away, they all are moving away, and the farther out they are, the faster they are moving away from us.\n\nDoes this mean the universe is expanding? Perhaps it means that the big bang occured at our location, thus everything is moving away from us. Yah, right....\n\nPerhaps galaxies that were moving at high speeds towards us, have already passed us, and are now moving away from us.\n\nPerhaps galaxies that are moving at high speeds towards us, have the electromagnetic energy from them shifted so much, that we cannot detect them by normal means. This might mean that there are the same amount of galaxies moving towards us as away from us.\n\nPerhaps, the universe was expanding, but is now collapsing, but it takes 15-20 billion years for the light to reach us, and we can only see that they were moving away 15-20 billion years ago.\n\nLots of maybes.
116835
Here's the flaw in your logic. You think that the universe has to be in something else to expand. The Universe is literally being created more and more. By this I mean the volume of real estate in reality is growing. There doesn't have to be something else that it's growing within. It sets it's own barriers and those barriers mark the current circumference of existence.\nBy the way, science does not respect theories. It respects laws.
265314
Might be better to be more specific and tell us the question.  It is hard to just give you information on space - seeing as it is infinite for starters.