What is the proof that Big Bang had really occured?

Answer 1

The big bang theory makes several very specific predictions about what astronomers should find in the universe if the theory is correct. One of these is the "microwave background radiation," the remnants of the period in the early universe when it first cooled enough for light to be visible. The theory also predicts what that radiation should look like in terms of temperature, density, and fluctuations.
A couple of Bell Labs engineers, working with a microwave antenna, had this persistent noise they couldn't figure out the source of. After isolating it, and measuring it in various parts of the sky, they discovered it was this very background radiation that was predicted by the big bang theory -- and they weren't even looking for it. Since then we've launced satellites that have measured the CMB (cosmic microwave background) across the entire sky at high resolution, and it matches the theory's predictions to a very high degree of accuracy.

That's just one prediction the theory makes that has been found to be correct -- there are dozens of others. Go to your library and get some books on the big bang and cosmology in general -- too much to answer here :)

Answer 2

What's the problem with all the people who don't know what a scientific theory is? There really ought to be more of an effort made to teach people this. "Theory" does not mean the same thing in science that it does in lay speech.

In science, there are three levels of certainty of an idea. The lowest is "hypothesis". This is the scientific word for what most people think of when they say "theory". A hypothesis is an idea which is suggested because it fits the available facts, but which has not been tested.

The middle level is "theory". Most of what you'll learn in science classes is theory because hypotheses don't last very long and it's VERY difficult for a theory to become a law. A theory is a hypothesis that has been extensively tested and supported in the tests. There is ample evidence to support the theory and it is generally accepted as true. There is always the possibility that someday a new theory could come along which explains the data better, but for now the theory is accepted.

If a theory has been around for several hundred years and has never been proved wrong or supplanted by a newer theory, it MAY become a law. To give you an idea of how difficult this is--some textbooks still refer to "the Theory of Gravity!"

In other words, just because the Big Bang is a "theory" doesn't mean that there is no proof of it. In fact it means that there is.

Answer 3

There are two things which give evidence that the Big Bang occured:

1. The red shift of galaxies. The galaxies are all moving away from each other, which causes red shift. Just like a train makes the distinctive lowering of pitch as it goes by, light does the same thing. This is called the Doppler Effect.

2. The background microwave radiation that was found by two Bell scientists already mentioned in an answer above.

Answer 4

There is now proof that it is or is not true. And it may never be proven.
It is only the most likely theory around, because the most things in our universe today fits with the Big Bang theory...

The three main arguments in favor for the BB are:

An ever expanding universe, grows faster as it goes. This implies that the universe must have been minuscule at some time (it was believed to be smaller than an atomic particle before the BB)

Cosmic Microwaves: Scientists have never been able to hypothesize another origin of or source of radiation as uniform as the microwaves are other than the BB.

An abundance of light elements... see the link below for more information.

Answer 5

The Big Bang Theory holds that everything in the universe, stars, galaxies, radiation, interstellar gas, everything was created in one huge explosion. Since that time all of the matter in the universe is hurtling outward at speeds that increase with the distance from the site of the explosion, and which approach the speed of light for the most distant objects.
There are several versions of the Big Bang Theory, but in its purest form, all the matter and energy in the universe suddenly sprang into existence at some point estimated to be about 13.5 billion years ago. This matter and energy instantaneously came into being, forming a mass no bigger than a proton. Prior to that instant, nothing existed, no matter, no energy, not even empty space or time itself.
The Big Bang Theory explains the red shift, and also some of the background radiation that has been observed. But it explains little else. In particular, it fails to explain why the matter in the universe is distributed so unevenly.

Answer 6

Along with the fact that all the galaxies are moving away from each other and the significant amount of background radiation, about 40 years ago, scientists heard through a radio antenna (that was designed to pick up satellite emissions) this really loud humming. It was basically an echo of the big bang. It had been predicted before they heard said echo, and several years later, they won the nobel prize in physics for the discovery. It's been claimed by some to be the most significant scientific find of the 20th century.

Also, Amy F. is right about the word "theory." Read her thingie right below mine :)

Answer 7

The big bang theory makes several very specific predictions about what astronomers should find in the universe if the theory is correct. One of these is the "microwave background radiation," the remnants of the period in the early universe when it first cooled enough for light to be visible. The theory also predicts what that radiation should look like in terms of temperature, density, and fluctuations.
A couple of Bell Labs engineers, working with a microwave antenna, had this persistent noise they couldn't figure out the source of. After isolating it, and measuring it in various parts of the sky, they discovered it was this very background radiation that was predicted by the big bang theory -- and they weren't even looking for it. Since then we've launced satellites that have measured the CMB (cosmic microwave background) across the entire sky at high resolution, and it matches the theory's predictions to a very high degree of accuracy.
my dear fren this is some what i knew abt the question u asked.

Answer 8

Did the big bang really happen?
02 July 2005
Marcus Chown
Magazine issue 2506
Is it time to admit that the idea of a big bang just does not stack up? Marcus Chown meets the doubters thinking the unthinkable
WHAT if the big bang never happened? Ask cosmologists this and they'll usually tell you it is a stupid question. The evidence, after all, is written in the heavens. Take the way galaxies are scattered across the sky, or witness the fading afterglow of the big bang fireball. Even the way the atoms in your body have come into being over the eons. They are all smoking guns that point to the existence 13.7 billion years ago of an ultra-hot, ultra-dense state known as the big bang.

Or are they? A small band of researchers is starting to ask the question no one is supposed to ask. Last week the dissidents met to review the evidence at the first ever Crisis in Cosmology conference in Monção, Portugal. There they argued that cosmologists' most cherished theory of the universe fails to explain certain crucial observations. If they are right, the universe ... for more on the subject go to :

http://www.newscientist.com/article.ns?id=mg18625061.800&feedId=space_rss20

Answer 9

Once upon a time, 20 billions of years ago, all matter
(all elementary particles and all quarks and
their girlfriends- antiparticles and antiquarks,
all kinds of waves: electromagnetic, gravitational,
muons… gluons field ….. etc.) – was assembled in a “single point”.
It is interesting to think about what had surrounded the “single point”.
The answer is :
EMPTINESS- NOTHING….!!!
Ok!
But why does everyone speak about EMPTINESS- NOTHING in
common phrases rather than in specific, concrete terms?
I wonder why nobody has written down this EMPTINESS- NOTHING in
the form of a physical formula ? You see, every schoolboy knows that
is possible to express the EMPTINESS- NOTHING condition
by the formula T=0K.
* * *
Once there was a “Big Bang”.
But in what space had the Big Bang taken place
and in what space was the matter of the Big Bang distributed?
Not in T=0K?
It is clear, that there is only EMPTINESS, NOTHING, in T=0K.
Now consider that the Universe, as an absolute frame of reference is
in a condition of T = 2,7K (rests relic radiation of the Big Bang ).
But, the relic radiation is extended and in the future will change and decrease.
What temperature can this radiation reach?
Not T=0K?
Hence, if we go into the past or into the present or into the future,
we can not escape from EMPTINESS- NOTHING T=0K.
Therefore it is necessary to begin to think from T=0K.
===================
As Einstein said,
"remember gentlemen, we have not proven
that the Aether does not exist, we have
merely proven that we do not need it (for computations)"!
====================
http://www.socratus.com

Answer 10

Jus as the wet roads and streets and water pools on the road and e wetness of the building walls and inundation fo the water courses indicate that there should have been some rain , he movement and speed of the galactic matter is the space indicate that they should have started moving apart from one spot and Theyshould have been together and should have been thrown apart by one and the same force . This indicaes tha ther eshould have been an explosion of the matter th has thrown apart the matter into space . since space is vacuum and any mater pusjed by some force should continue to move in the direction of he force unhindered and unmitigated in speed for want of any resistence drom any thing , the scientists have found that the matter is srifting apart at the same rate of speed .Further it is scientifically proved that all elements are made of atoms the componets of which ae hew same thngs and hadiffent elements hae onloy difference in the count of these components of Elecron and proton and that everything in the universe has formed out of he same thing . It is the same thing that is manifesting in different forms . It is like the God being seen manifest in all matters in this universe without exception.