Explain to me the "string theory"?
489410
String theory is a model of fundamental physics whose building blocks are one-dimensional extended objects (strings) rather than the zero-dimensional points (particles) that are the basis of the Standard Model of particle physics. For this reason, string theories are able to avoid problems associated with the presence of pointlike particles in a physical theory. Studies of string theories have revealed that they require not just strings, but also higher-dimensional objects.
729095
Sometimes, when people cannot fathom or answer an issue, they turn to blind faith for that answer.  That is not the scientific approach and, carried to extremes, such blind faith can lead to the Dark Ages when very little was done to advance mankind's knowledge.\n\nThat being said, string theory can lead one to conjecture about the pre-big bang.  (I like your "big suck" idea by the way.)  String theory conjectures the possibility of parallel null universes, devoid of observable mass-energy as we know it.  Then, according to the theory, two of these big nothings collide.  Since they have an eternity to do it in, one can even show (using simple probability) at least one such collision is likely over an infinity (eternal) number of attempts.\n\n(If the concept of two "nothings" colliding gives you a headache, join the crowd.  Nothing, however, is only nothing in our limited four dimensional observable universe.  String theory goes up as high as eleven dimensions; so if these null universes exist in these higher dimensions, they would seem to be nothing to us because we cannot see beyond four dimensions.)\n\nSo two null universes collide.  When they do, the collision releases a lot (I mean A LOT) of energy (and mass, its all a jumble in the beginning).  That released energy-mass is what we on Earth now call the "big bang."\n\nThe last part of your question, re another big bang in our universe, is also a possibility according to string theory.  There is no reason to limit our null universe to just one collision with another null universe.  We can say "at least" one collision, because we live in one of the results.  \n\nBut there could very well be others, where our null universe has collided with other null universes, and not necessarily the one our null collided with to create the observable universe we live in.  Which brings up the possibility that other observable universes in our null universe might be totally different from our own.
625008
String theory is a model of fundamental physics whose building blocks are one-dimensional extended objects (strings) rather than the zero-dimensional points (particles) that are the basis of the Standard Model of particle physics. For this reason, string theories are able to avoid problems associated with the presence of pointlike particles in a physical theory. Studies of string theories have revealed that they require not just strings, but also higher-dimensional objects.\n\nThe basic idea is that the fundamental constituents of reality are strings of energy of the Planck length (about 10-35 m) which vibrate at resonant specific frequencies[1]. Another key claim of the theory is that no measurable differences can be detected between strings that wrap around dimensions smaller than themselves and those that move along larger dimensions (i.e., physical processes in a dimension of size R match those in a dimension of size 1/R). Singularities are avoided because the observed consequences of "big crunches" never reach zero size. In fact, should the universe begin a "big crunch" sort of process, string theory dictates that the universe could never be smaller than the size of a string, at which point it would actually begin expanding.\n\nInterest in string theory is driven largely by the hope that it will prove to be a theory of everything. It is a possible solution of the quantum gravity problem, and in addition to gravity it can naturally describe interactions similar to electromagnetism and the other forces of nature. Superstring theories include fermions, the building blocks of matter, and incorporate supersymmetry. It is not yet known whether string theory will be able to describe a universe with the precise collection of forces and matter that is observed, nor how much freedom to choose those details that the theory will allow. String theory as a whole has not yet made falsifiable predictions that would allow it to be experimentally tested, though various special corners of the theory are accessible to planned observations and experiments. Hence critics of string theory occasionally remark that the theory "... is not even wrong," quoting a quip attributed to Wolfgang Pauli.\n\nWork on string theory has led to advances in mathematics, mainly in algebraic geometry. String theory has also led to other theories, supersymmetric gauge theories, which will be tested at the new Large Hadron Collider experiment.\n\nTime travel in theory:\n\nSome theories, most notably special and general relativity, suggest that suitable geometries of spacetime, or certain types of motion in space, may allow time travel into the past and future if these geometries or motions are possible. Concepts that aid such understanding include the closed timelike curve.\n\nAlbert Einstein's special theory of relativity (and, by extension, the general theory) very explicitly permits a kind of time dilation that would ordinarily be called time travel. The theory holds that, relative to a stationary observer, time appears to pass more slowly for faster-moving bodies: for example, a moving clock will appear to run slow; as a clock approaches the speed of light its hands will appear to nearly stop moving. The effects of this sort of time dilation are discussed further in the popular "twin paradox".\n\nA second, similar type of time travel is permitted by general relativity, where a distant observer sees time passing more slowly for a clock at the bottom of a deep gravity well, and a clock lowered into a deep gravity well and pulled back up will indicate that less time has passed compared to a stationary clock that stayed with the distant observer.\n\nThese effects are to some degree similar to hibernation or hypothetical suspended animation (which slow down the rates of chemical processes in the subject), and only allow "time travel" toward the future: never backward. They do not violate causality. This is not typ
763015
It is a theory that looks at physics differently to try and combine General Relativity with Quantum Mechanics, something the Standard Model (the most widely accepted theory of how the universe work) has not been able to do.  Instead of using zero dimentional point particles, it uses one dimentional strings which cleans out some of the complications with the Standard Model.  However, most of its predictions have yet to be verified, so its not as widely accepted or as successful as the Standard Model.  The amazing thing about String Theory (actually, it is a whole bunch of theories) is that it predicts Gravitons, something the Standard Model has been trying to do for very long but hasn't been able to.
416781
Everything (atoms and sub atomic particles) is made of strings. What something is (which atom) is determined by how fast and in what way the strings vibrate.\n\nIt picks up where quantum theory leaves off, there are actually 5 or six string theories. recently they have been combined into "M theory"\n\nThe whole thing "sounds" really stupid.. but it seems to be how it is.\n\n\n(it does not have anything to do with genetics, it does have relevance to alternate realities but does not limit them to 7. for more on this, please ask another question.)\n\nps. the guitar explanation below is a good summary.
18056
actually, physicists are still looking for the law of everything that connects the different theories of things and stuff.  String theory is pretty interesting although it doesnt provide definitive answers, it gets closer.  You seem interested in this stuff, you should read "The Elegent Universe" by Brian Greene.  It will explain a lot and help with your understanding.  Be warned though, you might find it too interesting and get too curious like me and end up being a physics major just to get some questions answered, and more do get answered the farther you go in physics haha. Read that book though, it will blow your mind.
994795
No. Actually, the string theory is dominating physics. The string theory tries to combine the Theory of relativity and the quantum mechanics, forming the so-called " theory of everything". This theory should combine all the four elementary and fundamental  forces - Gravity, Weak Nucleur Force, Strong Nucleur Force, and the electromagnetic force. The String theory is still in progress. If you want to know more about this from me, e-mail me at supratim1_dey@yahoo.co.in.\nI am actually a theoretical scientist researching on the string theory. You have a very nice question. I will recomend you two books of Stephen Hawking - 1- Brief History of Time and 2 - Black Holes and Baby Universes.
1009323
I figure that a theory that predicts 6-7 extra dimentions may be true, but it is really easy to explain things with 9-10 degrees of freedom..\n\nTHink about it, you have data... you try to make a linear fit, most often you don't get a good correlation... Now try a 4th power polynomial fit... you get something better... 11th power can describe any data, but it makes no really valid predictions. \n\nAs Einstein said, "Any fool can make things bigger and more complicated" (don't remember exact words so this is paraphrasing) "but to explain things in simple manner truly takes a genius"\n\nBut there are things about it that are likely true, for instance the "strings" themselves... Yes, everything is made of a fundamental unit of energy (double slit experiment demonstrated that matter is localized energy) \n\nLast point: to have a valid theory it should predict measurable results, string theory does not.\n\nSo no, I doubt its tue, but only time will tell.
66351
There are two main kinds of strings: cosmic  strings, and then strings that are postulated to be building blocks of matter. \n\nCosmic strings are attempts to explain the irregularity of matter in the cosmos. \n\nThe other string theory postulates that matter is not built out of zero dimensional objects (particles) but out of one dimensional objects (strings).  These are very small and they vibrate to produce various effects. There are different varieties of these building block type string theories, which you can read about below.
1058278
A Grand Unified Theory of Everything cannot be explained in such fashion. I would recommend reading "Hyperspace" by Michio Kaku.
1087038
lets see there are different theroies about the fundamental particles............but answering you qestions i will say the "strings" are the fundamental particles and we physicist now belive that all the fundamental particles which we have establish through some experiments are basically made up of these strings......a string in a perticular mode behaves as a perticular fundamental particle like protron neutron electron or quarka etc
8671
M Theory attempts to go beyond superstring theory and purport that the multiverse is made up of 11 dimensions. \n\nM Theory is based on mathematical calculations and not empirical data. However, M Theory does successfully account for every issue of all superstring theories (classical, quantum physics, etc) and mathematically postulates the number to be at 11. \n\nFor more information:\nhttp://en.wikipedia.org/wiki/M_theory
1118502
I might be able to answer more fully if you reword your question and put some thought into exactly what it is you're looking for.  For example, string theory predicts extra dimensions beyond the four we experience.  Is that it?  Or are you referring to the Branes explanation, where there are extra dimensions as well as additional universes removed from our own?  Get some additional details and I'll edit.
117056
String theory is a model of fundamental physics whose building blocks are one-dimensional extended objects (strings) rather than the zero-dimensional points (particles) that are the basis of the Standard Model of particle physics. For this reason, string theories are able to avoid problems associated with the presence of pointlike particles in a physical theory. Studies of string theories have revealed that they require not just strings but also higher-dimensional objects.
572522
dimensions used to explain the behavior of strings and subatomic particles in String Theory.\n\nbut to give you a basic understanding of what another dimension can be like, think about this for a moment, we live in a world limited to and guided by four dimensions, now they are \n1:up/down \n2:left/right \n3:backwards/forward\n4:time\nnow go outside take a look at an electrical feeder cable, from the ground it looks like a solid line, but if you get closer to it you'll notice that there is a line wrapping around the wire where the wire is braided, now imagine if you are an ant crawling on the wire, these braids will be a dimension to you, because you have to follow their path otherwise you'll fall off. that's a perfect example of what another dimension besides the four that you are familiar with can be like. now in string theory, in order to explain the very complex movements and behavior of the strings and of other subatomic particles, mathematics will include those  additional dimensions in the theory, the only problem is that its very hard to understand much less visualize these additional dimensions, because they can be extremely complex and twisted around all over the place.\n\nthe new M-theory includes as many as 11+1(that's 11 space dimensions and one of time)dimensions.
168536
There are two main kinds of strings: cosmic strings, and then strings that are postulated to be building blocks of matter.\n\nCosmic strings are attempts to explain the irregularity of matter in the cosmos.\n\nThe other string theory postulates that matter is not built out of zero dimensional objects (particles) but out of one dimensional objects (strings). These are very small and they vibrate to produce various effects. There are different varieties of these building block type string theories, which you can read about below.
1095974
this is sort of trival, dimensions can be thought of as derivatives, and you can take a formula and make any number of derivatives of the original derivatives and still end up with a line that bends, indicating no limit to the number of dimensions we can really conceive..   \nModern string theory is a bunch of hoo haa,   such a sub-atomic idea makes no sense, the reality we know could not have order if there were "strings".  "strings" have no way of organizing themselves into different sub-atomic particles, the universe would just be a bunch of "strings"