What is the big-bang theory & on what basis it is developed?

Question

What is the big-bang theory & on what basis it is developed?

Answer 1

google it

Answer 2

The Big Bang theory is science's best explanation of how the universe was created. The theory asserts that our entire universe was created when a tiny (billions of times smaller than a proton), super-dense, super-hot mass exploded and began expanding very rapidly, eventually cooling and forming into the stars and galaxies with which we are familiar. This event is said to have happened approximately 15 billion years ago. Rather than expanding outward into some preexisting vacuum, the event of the Big Bang was space itself expanding - perhaps at speeds greater than light. (While Einstein's theory of relativity forbids anything within space from travelling faster than light, it sets no limitations on how fast the fabric of space itself may expand.)

The Big Bang theory was originally developed in the late 1920s by Georges-Henri Lemaître, a Belgian Catholic priest and astronomer, an early advocate of solutions to the general relativity field equations which predicted our universe was expanding. (For cosmological theories to be taken seriously, they must pose possible solutions to Einstein's general relativity field equations.) Though the expanding-universe solution to the field equations was derived by the Russian cosmologist Alexander Friedman in 1922, Lemaître was the first to realize that a continuously expanding universe implies that at some point in the past the universe must have been much denser and smaller, even atom-sized.

Answer 3

it is the theory that explains the formation of universe

it has been developed on basis of some waves that have been captured as a result of this explosion they r the remains

it has been discovered that the universe is expanding

so definitely it wud hv started from a very small point like the size of an atom

n then it wud hv exploded

Answer 4

It was developed when the author was in bed. You know what I mean

Answer 5

The Big Bang theory is a scientific theory that proposes that our universe was formed in an 'explosion of space' arising from a single point that contained all the mass in the Universe. The current form of the theory has this explosion starting approximately 13.7 billion years ago, give or take a few hundred million years. One could say that the 'explosion' has continued up until now, although the most violent period ended a few hundred million years after the beginning of the Universe.

The theory is based on a number of key points of evidence. First, it has been known for many decades that the Universe is expanding over time. This expansion is not merely an expansion of matter through space, as many people imagine, but actually an expansion OF space (with matter simply coming along for the ride). This is known to scientists due to an effect known as the Doppler shift. Stars emit certain frequencies of light according to the elements they contain, and galaxies that are much farther away (hundreds of millions of light years) have their frequencies shifted towards the red (low-frequency) end of the spectrum, which indicates that they are moving away from us. The effect increases mathematically with distance, and is more or less consistent for all sufficiently distant galaxies regardless of their direction from Earth, meaning that the entire Universe is expanding. The nature of this expansion suggests that the expansion had a beginning at a singularity of space, a finite amount of time ago.

Second, there exists a phenomenon known as the Cosmic Microwave Background. No matter where scientists point their radio telescopes, they see, beyond even the most distant galaxies formed soon after the Universe was born, an entirely uniform haze of microwave radiation that pervades the entire Universe. This radiation had to have had a source, and the only source that properly explains its uniformity is the Big Bang. You can read more about it here:

http://en.wikipedia.org/wiki/Cosmic_Micr...

Third, it is well known that matter in the Universe is composed almost entirely of light elements. Hydrogen is by far the most common element in the Universe, and helium makes up the vast majority of the remainder. The proportions of these elements are fairly close to what is predicted by the Big Bang model.

You can read more about the Big Bang here:

http://en.wikipedia.org/wiki/Big_Bang

Answer 6

It is an old cosmological theory used to explain the redshifts of most galaxies. It states the universe was increasingly expanding from since its fuzzy nanoscopic orgin where it was brought into existence by a 'Prime Observer' according to the quantum mechanical concept known as 'Shrodinger's Cat'. It said only special large-scale cosmological space increasingly expands but not 'mundane space' like that in our planetary orbits and atomic orbitals. Not to mention it never explained why the embedded objects' dimensions (another type of space) weren't expanding either.

New theory (for now):

http://www.princeton.edu/pr/pwb/02/0506/...

Remember theories come and go. We must keep a handle on our hubris for the universe is in actuality much stranger than we will ever really know...

Answer 7

Check out this site

http://en.wikipedia.org/wiki/Big_Bang

Answer 8

The theory was developed out of mankind's frustration for continually being told by the weak and insecure religious fanatics who for at least 2000 years have used scripture and spurious books to con those who seek to find the truth (usually for some financial or personal gain) about the world around us and it's history, regardless of the repercussions - just ask Galileo, Ironstein, Newton or Copernicus.