What was the big bang?

Answer 1

One of the best know theories in cosmology is the Big Bang. This is the idea that our universe started out much hotter and denser than it is now and has been expanding since then. This theory is based on observations of our universe, among which are:

-External galaxies are receding in such a way that their recessional speeds are proportional to the distance they are away from us (this is called Hubble's Law after Edwin Hubble who first noticed it). This observation is explained well by a uniform expansion of the universe. If the universe is expanding, it must have started out very small some time far in the past. It is this point which has been called the beginning of the universe or the "Big Bang."

-When we observe the night sky we see an excess of radiation which is called the CMB radiation (cosmic microwave background radiation). It is a perfect black body with a temperature of 3 Kelvin. Taken with the expansion of the universe, this radiation says that the universe must have been much hotter in the past and also opaque to radiation. It turns out that the CMB radiation fits in perfectly with being from the first photons to escape after the universe became transparent. The universe became transparent for the first time when atoms first formed (in an event known inexplicably as recombination).

Answer 2

As far as science knows at this time, prior to the Big Bang there was nothing but an infinite, absolute void totally without space, time, energy or matter. Somehow an event occurred that came to be known as the Big Bang. Suddenly an unimagineable amount of energy and temperature came into being that existed in what's known as a 'singularity,' a point of infinite energy contained within zero volume. Instantly space began expanding from this point, and as it grew larger it cooled enough for the first simple atoms to form. Temperatures continued to fall as the expansion continued. More complex quantities of matter formed, and much later the first stars formed, and after that the first galaxies.

Answer 3

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.

Answer 4

the big bang assumed by scientists occured some 6 billion years ago as a proof they mention

the indian sub continent got split from africa and got attached to asian continet from himalayas !!! this is considered to be acceptable

Answer 5

wasn't that like new years eve or something?

Answer 6

A lie!!!!!!!!!!!!

god bless you