whether the big bang theory is true?

Answer 1

it's a theory, nobody really knows.

Answer 2

First and foremost, forget the idea that there is any notion of something being "true". There are only perspectives. We exist and function effeciently by adopting perspectives that best suit a given circumstance. In the case of analyzing reality, we use whatever model which has been generally agreed upon as being the "best". There will always be disagreements and the model will always change as our knowledge and experience grows. That being said...

The Big Bang theory is generally accepted. It is a mathematical model based on our current understanding of the universe. Measurements taken of celestial bodies seem to indiciate that the universe is generally expanding, that is, most heavenly bodies seem to be moving away from each other. We can also detect if an object is moving toward or away from the earth by measuring the blue-shift or red-shift of the light that is coming to us from that object (if you don't know what these terms mean you can look it up on google or wikipedia).
There is also the cosmic microwave background radiation which is believed to be a remnant of the extreme energies released during the big bang.
The theory goes, that if you rewind the history of our universe, all the matter and energy would coalesce to a single point known as a singularity. The concept is similar to that of a black hole. The idea is that this singularity exploded under it's own pressure expelling matter and energy (as well as some other theoretical particles) which gave rise to the universe we see today. There is some controversy as to whether our universe will continue to expand indefinitely until everything ultimately cools down reaching a state of equilibrium, or if it will collapse under it's own gravity and create another singularity ("The Big Crunch"). It's worth noting here that in the scenario of "The Big Crunch", all the matter and energy collapsing may not have sufficient trajectories to allow for the formation of a singularity. Instead, all matter/energy may fall back close to each other yet miss each other entirely and pass by. This would result in a re-expansion of the universe, sort of like a big rubberband expanding and contracting over and over again. Even if another singularity is formed in the big crunch, it is likely that it will once again explode to form a universe.
This is not the only theory out there however. There are other ideas regarding the origin of the universe but it would be too lenghty to go into any depth here.
Cheers.

Answer 3

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.
In 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.

The 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.

Although the Big Bang Theory is widely accepted, it probably will never be proved; consequentially, leaving a number of tough, unanswered questions.

Answer 4

The 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.

Although the Big Bang Theory is widely accepted, it probably will never be proved; consequentially, leaving a number of tough, unanswered questions.

Answer 5

Big Bang Theory - Evidence for the Theory
1) First of all, we are reasonably certain that the universe had a beginning.
2) Second, galaxies appear to be moving away from us at speeds proportional to their distance. This is called "Hubble's Law," named after Edwin Hubble (1889-1953) who discovered this phenomenon in 1929. This observation supports the expansion of the universe and suggests that the universe was once compacted.
3) Third, if the universe was initially very, very hot as the Big Bang suggests, we should be able to find some remnant of this heat. In 1965, Radioastronomers Arno Penzias and Robert Wilson discovered a 2.725 degree Kelvin (-454.765 degree Fahrenheit, -270.425 degree Celsius) Cosmic Microwave Background radiation (CMB) which pervades the observable universe. This is thought to be the remnant which scientists were looking for. Penzias and Wilson shared in the 1978 Nobel Prize for Physics for their discovery.
4) Finally, the abundance of the "light elements" Hydrogen and Helium found in the observable universe are thought to support the Big Bang model of origins.

Big Bang Theory - The Only Plausible Theory?

Is the standard Big Bang theory the only model consistent with these evidences? No, it's just the most popular one. Internationally renown Astrophysicist George F. R. Ellis explains: "People need to be aware that there is a range of models that could explain the observations….For instance, I can construct you a spherically symmetrical universe with Earth at its center, and you cannot disprove it based on observations….You can only exclude it on philosophical grounds. In my view there is absolutely nothing wrong in that. What I want to bring into the open is the fact that we are using philosophical criteria in choosing our models. A lot of cosmology tries to hide that."4

In 2003, Physicist Robert Gentry proposed an attractive alternative to the standard theory, an alternative which also accounts for the evidences listed above.5 Dr. Gentry claims that the standard Big Bang model is founded upon a faulty paradigm (the Friedmann-lemaitre expanding-spacetime paradigm) which he claims is inconsistent with the empirical data. He chooses instead to base his model on Einstein's static-spacetime paradigm which he claims is the "genuine cosmic Rosetta." Gentry has published several papers outlining what he considers to be serious flaws in the standard Big Bang model.6 Other high-profile dissenters include Nobel laureate Dr. Hannes Alfvén, Professor Geoffrey Burbidge, Dr. Halton Arp, and the renowned British astronomer Sir Fred Hoyle, who is accredited with first coining the term "the Big Bang" during a BBC radio broadcast in 1950.

Answer 6

My Answer is ' YES' . 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.
In 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.

The 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.

Answer 7

No scientific theory can ever be proven "true". The best scientists can do is find evidence that a theory is false. So far, all the evidence shows that the big bang theory is true.

Answer 8

About the theory of the “Big Bang” is written the thick (very thick) books.
But anywhere do not write about the reason of the “Big Bang”.
Anybody does not know it.
I know.
Action, when the God opens his palm,
have named the “Big Bang”.
And action, when the God compresses his palm,
have named " a single point”.

Answer 9

according to me the big bang theory may be true because as we know that the universe is moving it may come back to a particullar point forming a hugh mass again as it was before .so i belive that the theory is true

Answer 10

Yes, as far as present knowledge about it. The universe came into being because of a big bang giving berth to several spherical planatery objects and is constantly expanding.

Answer 11

can be true.
there is no theory that proves it wrong
but theories for time before big bang are different
M-theory might be of some help in understanding universe before big bang