What is The Big Bang Theory called now in educational institutions?
91840
It is still called The Big Bang Theory...
258481
The Big Bang almost CERTAINLY occurred. The cosmic microwave background radiation, expansion of galaxies, and isotropy of the background radiation throughout the universe all seem to indicated that the Big Bang really did occur. The cosmic microwave background radiation is usually the strongest piece of evidence presented by scientists to "prove" the Big Bang. Other than the Big Bang theory there are no really acceptable theories other than those which rely on the metaphysical or religious. For a thorough explanation of why the Big Bang almost certainly did occur, see the following link.
395881
I hope that most of the previous answerers were joking. The Big-Bang theory is the best theory of the origin of the Universe that we have so far. It was formulated based on the expansion of the Universe, that we know because everywhere we look on the sky, on average, the galaxies are getting away from us, not because the "red radiation" but because of redshift, the light emitted by the galaxies is redshifted, which means that they are getting away form us (check at the Dopler effect to understand this), and the farther away the faster they are getting away, check: Hubble law. This means that the expansion is accelerated, then is natural to thing that going to the past the galaxies were closer together and there was a moment when they actually were in a single point of infinite density and energy, a singularity. The big bang states then that something caused this singularity to explode producing the accelerated Universe we see today with all the things inside. Now, Science can tell more or less how the Universe has evolved since a brief moment (less than one second) after big-bang until know, but it can not tell what happened at the "zero time" because general relativity breaks down in the singularity. Nobody know what triggered this big explosion.
990294
The scientific theory is that the Universe started as a fluctuation of the vacuum. Such vacuum fluctuations make appear a small amount of energy, for a small time. This phenomenon is responsible for the existence of forces, that hold the Universe and matter together.\n\nNormally the bigger the energy fluctuation, the smaller the time it is in existence.\n\nNot so the Big Bang. That was a HUGE fluctuation. So big that a lot of energy came to appearance in the form of mass, elementary particles. These particles started expanding, before the vacuum could reclaim the energy.\n\nAnd it is still expanding today. 14 billion years later.\n\nThe Big Bang theory itself, doesn't say anything about the *cause* of the explosion. It describes only how the Universe evolved after the explosion took place.\n\nNow for some speculation. Is our Universe the only one? Maybe not. The Big Bang was one big fluctuation, maybe other smaller or bigger, take place all the time.\nBut most of these fluctuations will produce Universes in which conditions are just not suitable for life.\nThe Universe we observe is by necessity one in which the conditions are just right for us to have evolved into Homo Sapiens capable of asking philosophical questions.
230650
I think the Big Bang is actually another universe budding off. There were mulitple Universes (Parralel Universe Theory) before the big Bang. Yet, what do u define as a universe? If it is a "world" of intelligent being maybe not (who knows). So the answer is yes and no depending on ur definiton of a universe.
188695
If I were you, I'd search it myself instead of asking people, but that's just me.\n\nThere are so many theories to how the universe started, in which the Big Bang theory is the most popular. In this theory, it all started with a single point with the same amount of matter in the universe and it was really really hot. Then it just explodes, continuing to expand at an alarming speed. It was so hot that not even the particles that made up atoms could not even form until the universe was expanded enough to cool down, and then the first atoms were made. Then it just continues to expand to where we are now.\n\nThat's one theory. I like the never-started theory. There was no beginning to our universe. The reason why the Big Bang theory is the most accepted theory is because we (us humans) like to think that there is a start to everything. It just makes sense that there is a beginning. And it's easier to build theories and ideas upon it.\n\nPS Penguins!!!
745650
The big bang theory is just that: a theory. I have found it to be science fiction. It finds its strength in the redshift of distant star light. The assumption is if a star looks red, it is either red in color or the light from it with respect to our position is of the red-light wavelength. This can be true if the star is receding from us "or we are moving away from it).\n\nHowever, there are other explanations some people have suggested for the red shift.\n\nThe problem with the universe starting from a single point is that the bang would need to be so big to overcome infinite gravity as well as to overcome the event horizon of that point. i.e. to come out of the gravitational sphere in which even light cannot escape.
196438
In physical cosmology, the Big Bang is the scientific theory that the universe emerged from an enormously dense and hot state about 13.7 billion years ago. The Big Bang theory is based on the observed Hubble's law redshift of distant galaxies that when taken together with the cosmological principle indicate that space is expanding according to the Friedmann-Lemaître model of general relativity. Extrapolated into the past, these observations show that the universe has expanded from a state in which all the matter and energy in the universe was at an immense temperature and density. Physicists do not widely agree on what happened before this, although general relativity predicts a gravitational singularity (for reporting on some of the more notable speculation on this issue, see cosmogony).\n\nThe term Big Bang is used both in a narrow sense to refer to a point in time when the observed expansion of the universe (Hubble's law) began — calculated to be 13.7 billion (1.37 × 1010) years ago (±2%) — and in a more general sense to refer to the prevailing cosmological paradigm explaining the origin and expansion of the universe, as well as the composition of primordial matter through nucleosynthesis as predicted by the Alpher-Bethe-Gamow theory [1].\n\nOne consequence of the Big Bang is that the conditions of today's universe are different from the conditions in the past or in the future. From this model, George Gamow in 1948 was able to predict, at least qualitatively, the existence of cosmic microwave background radiation (CMB) [2]. The CMB was discovered in the 1960s and further validated the Big Bang theory over its chief rival, the steady state theory.\n\nThe Big Bang theory developed from observations and theoretical considerations. Observationally, it was determined that most spiral nebulae were receding from Earth, but those who made the observation weren't aware of the cosmological implications, nor that the supposed nebulae were actually galaxies outside our own Milky Way[3]. In 1927, the Belgian Catholic priest Georges Lemaître independently derived the Friedmann-Lemaître-Robertson-Walker equations from Albert Einstein's equations of general relativity and proposed, on the basis of the recession of spiral nebulae, that the universe began with the "explosion" of a "primeval atom"—what was later called the Big Bang[4].\n\nIn 1929, Edwin Hubble provided an observational basis for Lemaître's theory. He discovered that, relative to the Earth, the galaxies are receding in every direction at speeds directly proportional to their distance from the Earth. This fact is now known as Hubble's law [5]. Given the cosmological principle whereby the universe, when viewed on sufficiently large distance scales, has no preferred directions or preferred places, Hubble's law suggested that the universe was expanding contradicting the infinite and unchanging static universe scenario developed by Einstein.\n\nThis idea allowed for two opposing possibilities. One was Lemaître's Big Bang theory, advocated and developed by George Gamow. The other possibility was Fred Hoyle's steady state model in which new matter would be created as the galaxies moved away from each other. In this model, the universe is roughly the same at any point in time[6]. It was actually Hoyle who coined the name of Lemaître's theory, referring to it sarcastically as "this big bang idea" during a program broadcast on March 28, 1949 by the BBC Third Programme. Hoyle repeated the term in further broadcasts in early 1950, as part of a series of five lectures entitled The Nature of Things. The text of each lecture was published in The Listener a week after the broadcast, the first time that the term "big bang" appeared in print. [7]
871779
That is what science is trying to figure out.\n\nOne theory is that all matter and energy exploded in a Big Bang from a point particle or singularity.\n\nHowever, current technology prevents us from going back to time zero or the origin of the universe. At a point in time (just s tiny fraction of a second before the Big Bang) all laws of physics break down and yields meaningless answers.\n\nThere are several other theories as well. Another thought (that has been largely abandoned) is that the universe was continually expanding, in cycles, from a Big Bang to a Big Crunch.\n\nThere is another theory that the universe is constantly folding over on itself, continuously annihilating and creating itself.\n\nAnd in quantum physics, the is a concept which even suggest that reality, all of human experience, may be nothing short of a personal subjective concept without substance at all.\n\nQuantum physics is a mysterious world that suggests that many of our concepts are too limited and that there are worlds we can't even imagine (parallel universes, many worlds, branes, dimensions, steady state, etc.)\n\nOur knowledge and understanding of the universe is akin to the knowledge and understanding that an ant has of the world economy.
433535
theoretically, the background microwave radiation is a remnant of the "big bang" - it's presence is thought to indicate the residual energy from the universes' transition from singularity to it's expansion phase (where we are now, in part).
279005
The Big Bang Theory is the dominant scientific theory about the origin of the universe. According to the big bang, the universe was created sometime between 10 billion and 20 billion years ago from a cosmic explosion that hurled matter and in all directions. \nIn 1927, the Belgian priest Georges Lemaître was the first to propose that the universe began with the explosion of a primeval atom. His proposal came after observing the red shift in distant nebulas by astronomers to a model of the universe based on relativity. Years later, Edwin Hubble found experimental evidence to help justify Lemaître's theory. He found that distant galaxies in every direction are going away from us with speeds proportional to their distance. \n\nThe big bang was initially suggested because it explains why distant galaxies are traveling away from us at great speeds. The theory also predicts the existence of cosmic background radiation (the glow left over from the explosion itself). The Big Bang Theory received its strongest confirmation when this radiation was discovered in 1964 by Arno Penzias and Robert Wilson, who later won the Nobel Prize for this discovery. \n\nAlthough the Big Bang Theory is widely accepted, it probably will never be proved; consequentially, leaving a number of tough, unanswered questions.
467061
the proponents of the big bang theory say that it is still expanding. in fact studies have shown that it indeed is expanding. i am not aware of the exact figures bu the interplanetary distances are increasing by the minute. if that were to be so then all galaxies are also moving away from each other (its proven) . therefore it could be safely said that the universe is expanding.
732289
the complete concept of big bang is explained here... beginning to the end.\n\nWhat happened before the big bang, evidence of the big bang theory, what caused the big bang, big bang theory of evolution are some of the questions asked on the Internet today.\n\nWhat do we mean when we talk of big bang theory? It is in the last 30 years or so that scientists across the world accepted and confirmed the existence of the big bang theory. It has more or less been proved that the evolution of the Cosmos occurred with a big bang. There is no further denial on this fact of big bang theory.\n\nThis evidence put forward by the scientific community is further corroborated firmly by spirituality. How?\n\n\nLet us travel to the beginning of time when the Cosmos is in the process of complete dissolution. What happens after the complete dissolution of the Cosmos? In the field of the spirituality... everything contained in the Cosmos is but an illusion... an act of Maya (Veil of ignorance). There is nothing in the Cosmos which is solid in nature.\n\nBroken down to the basic building block of the universe... everything in the whole of Cosmos is a cluster of atoms and molecules. Then what constitutes the Cosmos itself? Spirituality spells out the truth... everything contained in the whole of Cosmos is but souls atmans and ether, the inert matter.\n\nEther is that dark black substance which fills up the void existing all over the Cosmos. Apart from ether spirituality defines the Cosmos consisting of souls atmans and nothing more. Whatever is visible to the physical senses of a human being nay every living being is limited to the use of the physical senses. Beyond the senses.... nothing exists in the whole of Cosmos except the world of souls atmans and ether.\n\n\nThe dissolution of the Cosmos is best defined in Bhagavad Gita, the sacred doctrine put forward by Lord Krishna in the battlefield of Kurushetra. As per Bhagavad Gita Almighty God is defined as, "the sum total of all the purified souls atmans in the Cosmos at a given point of time"! At the time of the dissolution of the Cosmos all the souls atmans in the Cosmos having purified themselves collect together to form what we know as God Almighty.\n\nThis collective power of all the souls atmans in the Cosmos... the size of half a thumb as detailed in Bhagavad Gita and unable to contain itself for long explodes with a big bang. And this big bang leads to formation of a new Cosmos... a new series of universes, galaxies, cluster of stars and solar systems.\n\nEvery new Cosmos can begin only after a big bang. No Cosmos can form without the big bang having occurred! The occurrence of the big bang announces the formation of a new Cosmos. It is the big bang theory which paves way for all the souls atmans in the Cosmos to start their cosmic travel of 8.4 million manifestations.\n\n\nThe big bang having occurred... it takes millions and billions of years before the system becoming conducive for life to germinate. As the conditions became conducive for life to germinate on Mother Earth... the souls atmans (within the gravitational pull of the solar system) settled on Mother Earth. This gave birth to life on Mother Earth.\n\nStarting the journey as an amoeba and finally culminating into the form of a human being... it is only as a human being that one reaches the end of life... gains enlightenment and finally salvation!\n\nThe big bang theory announces the start of a new Cosmos... the beginning of life for every soul atman on its cosmic journey!\n\n\nSpirituality or otherwise... the start of the Cosmos could not have occurred without a big bang. It is only the big bang theory which governs the start of cosmic system. There is no other means which could have led to start of a new Cosmos without a big bang.\n\nThe big bang is that phenomenon in the life of a Cosmos without which the existence of God Almighty himself would get negated. God Almighty being the sum total of all purified souls atmans
627179
M theory is an imaginative extension of string theory that says the universe exists on a "brane".  This brane apparently resembles a membrane floating through space.  Instead of the standard big bang theory, m theory states the universe was born in an ekpyrotic event, the collision of two above mentioned branes.  While it gives string theory mathematical existence with 11 spatial dimensions, and brilliantly explains the observed particle interactions within particle accelerators (which no other theory has managed to do, the extensions of this theory are hard to prove and create a great deal of theological debate.
14349
The known universe based in our present level of technology is not necessarily the whole existing universe or universes.We can have a beginning in our known universe independently of the others. For example, one of the theories explain the present expansion as a huge bubble of matter and waves. But, maybe there are other bubbles. And what if the black holes are the  connections with other parallel universes in other dimensions? And the Big bang is just a transfer of matter from one universe to other? Many scientists are working now in this subject, and the best way to follow the new theories is reading the science journals from time to time.No answer is definitive because the science will continue to discover new facts and develop new theories that are beyond the wildest imagination.
150929
The "big bang" is all about math. But not a zero divided by x math...a little more complex. Two competing theories are Inflation - which states that a sudden switch in the vaccuum state formed a false vaccuum that led to a positive-feedback mechanism of matter creation within a few seconds that happened so quickly that space began to expand faster than the speed of light, blowing apart spacetime into a "flat universe".\n\nThe second is the "ekpyrotic scenario" where two membranes collide in five-dimensional space and cause a huge release of energy that condenses into matter. This one's a bit scary because it also postulates that the collision could happen again at any moment and destroy the universe in a big ball of flame.
225886
The other possibility [besides the Big Bang] was Fred Hoyle's steady state model in which new matter would be created as the galaxies moved away from each other. In this model, the universe is roughly the same at any point in time. It was actually Hoyle who coined the name of Lemaître's theory, referring to it sarcastically as "this 'big bang' idea" during a 1949 BBC radio program, The Nature of Things, the text of which was published in 1950.