Is there a way we can tell (measure)  if gravity is leaking out or into our universe?
397017
You would have to be able to take a base measurement on the number of quarks that is associated with gravity in an area observed and tell over time if there is a gain or loss of quarks from the base measurement.\n\nP.S.\nThere is no way in the world that the current technology can even begin to do this provided that we would have to agree that // universes exist.
65553
The problem here is that you are not visualizing this accurately (and humans might not be able to do so easily). All of our universe's space and time, until it expands, does not exist. \n\nThere might be other universes, or other dimensions, but we really only have theories about those, and we do not have good methods for testing these hypotheses yet, and we might never have them.
942961
It is scientifically possible.\n\nConsidering we do not even know what causes gravity, your experience may well be feasible due to complex aspects of gravity.\n\nWe formulate gravity by observation and assume it increases with mass of objects in proximity, and decreases dramatically as distance between objects increase !\n\nThis formulation is approximately accurate in isolation and within simple boundaries.\n\nScientists are still bewildered and shy to reveal recent discoveries that indicate most of what is around us we can not detect. Dark matter and dark energy have gravitational effect, so powerful that the current rate of expansion of universe is considered a rip - influenced by dark matter and dark energy !\n\nString theory along with dark matter and dark energy suggest a dozen or so more dimensions exist around us.\n\nSo, rather than denying unexplained phenomena, we would be better off researching them by scientific validation and verification.
519151
There are three basic methods:\n\n1. Parallax. The angle at which the object appears in the sky is very precisely measured at one point in the Earth's orbit, then measured again six months later. Since the Earth is in a different position at these times (186 million miles between the two measurments), the star will appear at slightly different angles, and its distance can then be worked out from these angles using simple trigonometry.\n\n2. Standard candles. Certain types of stars (Cepheid variables, RR lyrae variables), and certain types of stellar events (type Ia supernovae), have luminosities that can be worked out fairly precisely from their intrinsic properties (the variable stars for instance, have a period of variablility that is closely correlated with their luminosity, and the type Ia's luminosity can be worked out by examining its light curve). Since percieved luminosity varies inversely with the square of the distance, and since we konw how much light they put out at the source, we can work out how far away these stars are simply by measuring how bright they are.\n\n3. Redshift. The universe is expanding, and that means that from our perspective, distant galaxies are all moving away from us. This means that the light we recieve from them will be at a lower frequency (that is, redder) than the light they emitted, due to the doppler effect. Edwin hubble discovered that at large scales, the observed redshift is directly proportional to the distance of the object from us. This means that if the object is too far away to measure using parallax and lacks a good standard candle, we can still determine its distance simply by measuring its velocity. Actually doing this is somewhat difficult, and involves looking for patterns in the absorption lines in the object's spectrum to figure out what elements created those lines, and then one you know that you can figure out what the frequency of the light should be. After that, you have to work to filter out as many extraneous sources of redshift as possible, such as the object's gravity, its velocity due to gravitational interactions with other nearby objects (what is called the peculiar velocity), and so forth, to leave just the velocity due to the expansion of the universe - from which the distance is estimated using hubble's law.
1075314
The current status of the universe actually does work like that.  Technically, with gravity the universe should collapse back upon itself and the big bang would occur all over again.  However, gravity is one of the weakest forces in the universe.  With that said, it has been measured that the universe is expanding and accelerating at a rate that exceeds the gravitational forces required to initiate the "big crunch."\n\n\nThere are two schools of thought right now.  One is that the universe will continue to decelerate but never completely stop or collapse upon itself.  More recent theories have stated that the universe appears to be accelerating.\n\nAs it stands now, I would say that it is safe to say that the odds are extremely low of the universe collapsing back to a singularity.\n\nSee the link below for some more information.
801582
No, physicists have always known that gravity is the one "force" that we really still don't understand. Now it is true that at macroscopic or large distance scales, we understand gravity very well through Einstein's General Relativity Theory. But at the quantum level, the scale of sub-atomic particles, we have no idea how gravity works there. And the most interesting thing is that when we try to probe and understand gravity at the quantum level, we find that we have to abandon all our currently understanding of space and time, as well as the notion of 3-dimensional space.
8989
It looks the secret of the universe is simple.. GRAVITY. \nNothing can escape it not even light. And that gravity is holding the string of the universe together. If the gravity is lost, survival of galaxies would become a question.
104099
The gravity from your mom (Mother Earth)
91401
There isn't one.\n\nThis is similar to the question, "OK, the universe is expanding, what is it expanding into?"\n\nBoth questions are based on analogies which are designed to help us think about complex situations. They tend to be ones where we think of the universe as being something like the surface of an inflating beach ball which is being blown up. Our image of the "beach ball universe" includes space to expand into.\n\nThis is a limitation of the analogy, not the actual universe. The details of General Relativity describe the "shape" of the universe and how gravity effects different parts. GR works on the scale of galaxies and galaxy clusters. For smaller scales, dropping a pencil off your desk for instance, Newton's Gravity is fine. (GR turns into Newton's Law of Gravity at small scales.)\n\nOur brains are simply not designed to imagine curved space with all three spatial dimensions. To get around this the analogies use two-dimensional universes. But the analogies can't be taken too far. In this case, the only way to really understand deeply the structure of the universe is by understanding the mathematics. There is no exact mental picture.\n\nSo, the question has no answer, and in fact, logically speaking, makes no sense. (That isn't to say it is not a sensible question, it is a sensible question.)\n\nThe usual example of such a question is: "What is north of the north pole." Once one gets to the pole there is no more North. Everything is south. So asking what is north of the north pole is (logically) a nonsensical question.
1045412
gravity is an inverse square law type graph , you can plot it at y=1/x^2\ntry this site http://hyperphysics.phy-astr.gsu.edu/hbase/forces/isq.html\n\nanother graph is available here\nhttp://csep10.phys.utk.edu/astr162/lect/light/intensity.html
450131
As far as I know, they are still not sure as to what creates gravitational force. If they determine the source, one might negate it to experience zero gravity anywhere.
201357
This is an awesome question!  Because it relates Newton's law of gravity to real life applications.  The simple answer is yes.\n\ng = Gm1m2/r^2 is Newton’s equation for gravity.  It basically says that any two objects exert an equal and opposite force on each other.  So with that lets apply this to your question.\n\nFirst lets find out how dense coal is.... between 1.25 and 1.5 (depending on the specific kind of coal your looking for) with coke coal which is the most commonly use coal (I think) its about 1.25.  1.25 g/mL isn't very dense; in fact liquid water at 25 C is 1 g/mL so that gives you an idea of how dense coal is.  \n\nWell density is a measure of how much mass is packed into a particular volume or area, so the less mass in a particular area the "lighter" that area is (this is not very specific but its the only word I can think of at 6 am).  Anyways, moving on, when satellites orbit the earth they actually speed up and slow down depending on where they are over the earth.  For instance, when a satellite travels over the Rocky Mountains it actually slows down.... Why?  Because of Newton’s law of gravity!  There is more dense material in the Rockies, and so there is a greater attractive force exerted on the satellite (of course it is very minute, obviously the satellite doesn't drop out of the sky) but nevertheless the satellite does experience a slight change in velocity.  So, if you get two satellites following each other, this change in velocity over certain areas of the earth can help a scientist determine the relative density of that portion of the earth.  So, if these two satellites are traveling over a part of the land, and detect a pretty low density for solid matter, say around 1.5 or even as much as 2.5... etc. Scientists can deduce pretty accurately the composition of matter in that particular location and this ability has enabled humans to locate coal underground without even having to start digging.\n\n\nPretty cool huh?\n\nSo in short, satellites velocity helps determine the density of specific areas of the earth.  This density can help us determine the composition of matter in these specific areas.  Areas of land with low densities may contain coal.\n\nOn last disclaimer, this is how I was taught in my college physics course as the way we find the specific densities of the earth.  However, there may be a more technologically advanced way that I don't know of, that is used to locate coal.\n\nHope this helps!
196829
The crucial question is whether the universe is dense enough to slow things down enough before everything expands away. Yes, gravity exists all through the universe (at least what we can see). In fact, it was Einstein's theory explaining gravity that first predicted the expansion of the universe (although Einstein legislated that solution away by adding in another term). But if the density is too small, the velocity of expansion is already above the escape velocity and so expansion continues forever.\n\nEven more important, we have recently found that the expansion is accelerating! This means that the term that Einstein put in actually exists, but not in the way he expected. Nobody really understands what is happening with this 'Dark energy'.
995272
Science nor anyone else can answer your question! As far as science can determine, our universe (space) is not contained within any 'thing' else. If anyone tries to tell you otherwise, they're just blowin' smoke.
879076
According to Newtonian gravity, gravitational force is -GMm/r^2.  Any mass experiences a gravitational force toward every other mass in the universe, proportional to the product of their masses, and inversely proportional to the square of their distance.  This means my body experiences a certain gravitational force from the sun, no matter what else is happening in the universe.  That says it would be impossible to shield me from the sun's gravity.\n\nTo find the net gravitational force on me, simply do a vector sum of all the gravitational forces on me from all other masses in the universe.  Simple to say, not so simple to do.\n\nThat sum is zero at the center of mass of the universe, wherever that is.  Unless the expansion of the universe is perfectly uniform, that point will shift with time.  I could find other points where the sum is zero.  I move away from that center of mass but toward a large nearby mass, just close enough that the pull of that nearby mass exactly balances the pull of the rest of the universe.  These will be single points, not regions.  At these points, I still can't say there's no gravitational force acting on me.  But I can say there are countless gravitational forces acting on me, but their sum is zero.\n\nLet's say I tell you I found such a zero-sum spot, about 1/3 of the way between our sun and Alpha Centauri, and I take you there.  How will you know I am telling you the truth?  The principle of equivalence says that there's no test you could make to tell whether the net gravitational force there is zero, or whether you are just accelerating according to the effect of the nonzero net force on your mass.\n\nThe relativistic warping of spacetime in the presence of gravitational mass is more a way of representing or measuring that force, rather than explaining it.  Neither Newton nor Einstein could tell us why gravity exists or how it works.  If spacetime is not warped in your region, it doesn't mean the gravitational field is zero, it means it is uniform.  And again, how would you tell whether spacetime is warped in your region?\n\nI've tried for decades to think of a gravity shield or a gravity insulator.  If I do find one, watch for my Nobel Prize in physics, and for me to quickly surpass Bill Gates on the wealth scale.
1157163
Who said you could see it? You can make an educated guess that there is gravity due to its consumption of materials but you cant actually see gravity!
756344
So.....how do we find out the answer?