How did the Universe really started? By Big-Bam-Boom? How did it occured?

Answer 1

This theory states that the Universe in its current shape is only a phase of a process that started with a gigantic explosion about 15 billion years ago.

In the beginning the Universe was all in one point, all its matter and energy where squished into an infinitely small volume, mathematically expressed a singularity. From this singularity the Universe exploded and by this native explosion not only matter and energy was created, however also space and time.

The theory says that it is not of any use to speak of the period before the Big Bang, there is no 'before' because time (and space) did not exist.

Science assumes to have a good idea of the developemnts after the Big Bang.

Immediately after the explosion the small space was filled with energy (as radiation) and had an extreme high temperature, one milion billion billion billion (10 wtih 32 zeros) degrees Kelvin, this stage is called the primordial fireball.

In a fraction of a second elementary matter came into existence: protons, neutrons and electrons, followed by a very fast expansion (inflation). Since the beginning the Universe cools down and expands more and more. This time is called the radiation era, as electromagnetic radiation was the most important thing in the Universe.

After several hundred thousand years the temperature drop was large enough for atoms to develop from elementary particles, in particular hydrogen and helium, this is called the matter era.

After 300,000 years the Universe had cooled down enough to become transparent for radiation, at that time the first Galaxies arose.

Answer 2

In physical cosmology, the Big Bang is the scientific theory that the universe emerged from a tremendously dense and hot state about 13.7 billion years ago. The theory is based on the observations indicating the expansion of space (in accord with the Robertson-Walker model of general relativity) as indicated by the Hubble redshift of distant galaxies taken together with the cosmological principle.

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).

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.
May be there are some other theories about the formation of the universe

Answer 4

Its orite people saying 'there was no space and time before the big bang'. Its easy to say but the fact is that there was...Just like when a firecracker goes bang on the floor, the space around it was there before. I cant proove it though, the real question is where did the materials that made the big bang come from? If they were always there then why? why would they just 'appear'.

Also are there more big bangs in the universe, space is never ending so yes its likely too. Unlimited space = unlimted chances of intelligient life occuring and evolving, the chances of one of these intelligent life forms evolving without destroying them selves and become so smart they are pratically god, 99% because of the unlimited amount of space and time.

Were safe.

Answer 5

>that is for all you darn atheists, if the tremendous bang all started the universe who or what all started the tremendous bang? in reality, we do not recognize. There are some theories, depending on our present day expertise of the mathematics and physics of the Universe, yet we nonetheless do not really recognize. the challenge with you is this isn't sufficient for you. you aren't any further prepared to no longer recognize some thing, even briefly. And so instead of waiting till a real rationalization comes alongside, you're making up your own rationalization concerning a tremendous invisible chum contained in the sky. And now you want to placed US on the protecting for it? Sounds somewhat absurd, do not you imagine? >As Einstein once stated the prospect might want to be like an explosion in a print keep coming up the dictionary in alphabetical order. i do not recognize if Einstein honestly stated that. yet even with if he did, that's nonetheless a foul analogy. Einstein become insightful for his time, yet later in his existence he ended up at odds with various even extra radical theories- which includes Neils Bohr's quantum theory, that's now exceptionally a lot universally widely used as actuality. Einstein declaring it would not make it a strong analogy, and really it continues to be undesirable, for a minimum of three diverse causes (relying on what particular component of the Universe you're speaking about). in case you want to hearken to this causes, which for sure you do not, then be at liberty to placed up a question on the challenge.

Answer 6

scientists say there had been two big bangs in last 13 million years one at 6 one at 13 .~ million years

first question is we are not sure where the universe came from??

answer is God created the universe ,

all movemnts like present earth quake do happen at certain frequency probably many bangs to occur before the earth gets to another different shape

Answer 7

this is the most asked questions in the world of astronomers. there have been many theories about it.

and the explosion is called the "Big Bang" and not Big-bam-boom!

a new theory which is catching everyone's attention is the string theory! it explains most of the things and also the "Big Bang" but only theoretically.

Answer 8

Nobody knows how it really started because nobody was there at the beginning. The Big Bang is just a hypothesis given all the evidence that we see. Lots of hypotheses turn out to be untrue when new evidence arrives.

Answer 9

This question is very critical and difficult to answer like one plus one equal to two. Many rearches has been done in this field. We have to take the reference from the genaral theory of relativity and special theory of relativity written by Albert Ienstein.

Answer 10

At this stage of our understanding of the cosmos, that is more of a philosophical question, than a strictly scientific inquiry. No one truly knows.