This leads to the question of why the formation of matter after the Big Bang resulted in a universe consisting almost entirely of matter, rather than being a half-and-half mixture of matter and antimatter.

In this theory, the remote future of the previous aeons becomes the Big Bang of subsequent aeons.

He especially tried to explain the baryon asymmetry of the universe, being the first scientist to introduce two universes called " sheets ", linked by the Big Bang.

According to the Big Bang model, the Universe expanded from an extremely dense and hot state and continues to expand today.

The Big Bang theory is the prevailing cosmological model that describes the early development of the Universe.

According to the Big Bang theory, the Universe was once in an extremely hot and dense state which expanded rapidly.

According to the most recent measurements and observations, the Big Bang occurred approximately 13. 75 billion years ago, which is thus considered the age of the Universe.

While protons and neutrons combined to form the first atomic nuclei only a few minutes after the Big Bang, it would take thousands of years for electrons to combine with them and create electrically neutral atoms.

The Big Bang is a well-tested scientific theory and is widely accepted within the scientific community.

The core ideas of the Big Bang — the expansion, the early hot state, the formation of helium, and the formation of galaxies — are derived from many observations that are independent from any cosmological model ; these include the abundance of light elements, the cosmic microwave background, large scale structure, and the Hubble diagram for Type Ia supernovae.

Thus, the Big Bang theory cannot and does not provide any explanation for such an initial condition ; rather, it describes and explains the general evolution of the universe going forward from that point on.

Georges Lemaître first proposed what would become the Big Bang theory in what he called his " hypothesis of the primeval atom.

The framework for the Big Bang model relies on Albert Einstein's general relativity and on simplifying assumptions such as homogeneity and isotropy of space.

While the scientific community was once divided between supporters of the Big Bang and those of alternative cosmological models, most scientists became convinced that some version of the Big Bang scenario best fit observations after the discovery of the cosmic microwave background radiation in 1964, and especially when its spectrum ( i. e., the amount of radiation measured at each wavelength ) was found to match that of thermal radiation from a black body.

This singularity is sometimes called " the Big Bang ", but the term can also refer to the early hot, dense phase itself, which can be considered the " birth " of our Universe.

The earliest phases of the Big Bang are subject to much speculation.

A few minutes into the expansion, when the temperature was about a billion ( one thousand million ; 10 < sup > 9 </ sup >; SI prefix giga -) kelvin and the density was about that of air, neutrons combined with protons to form the Universe's deuterium and helium nuclei in a process called Big Bang nucleosynthesis.

The Big Bang theory depends on two major assumptions: the universality of physical laws and the cosmological principle.

Also, general relativity has passed stringent tests on the scale of the Solar System and binary stars while extrapolation to cosmological scales has been validated by the empirical successes of various aspects of the Big Bang theory.

The Big Bang is not an explosion of matter moving outward to fill an empty universe.

An important feature of the Big Bang spacetime is the presence of horizons.

Fred Hoyle is credited with coining the term Big Bang during a 1949 radio broadcast.

In the 1920s and 1930s almost every major cosmologist preferred an eternal steady state Universe, and several complained that the beginning of time implied by the Big Bang imported religious concepts into physics ; this objection was later repeated by supporters of the steady state theory.

This perception was enhanced by the fact that the originator of the Big Bang theory, Monsignor Georges Lemaître, was a Roman Catholic priest.

The other was Lemaître's Big Bang theory, advocated and developed by George Gamow, who introduced big bang nucleosynthesis ( BBN ) and whose associates, Ralph Alpher and Robert Herman, predicted the cosmic microwave background radiation ( CMB ).

The discovery and confirmation of the cosmic microwave background radiation in 1964 secured the Big Bang as the best theory of the origin and evolution of the cosmos.

Much of the current work in cosmology includes understanding how galaxies form in the context of the Big Bang, understanding the physics of the Universe at earlier and earlier times, and reconciling observations with the basic theory.

The earliest and most direct kinds of observational evidence are the Hubble-type expansion seen in the redshifts of galaxies, the detailed measurements of the cosmic microwave background, the relative abundances of light elements produced by Big Bang nucleosynthesis, and today also the large scale distribution and apparent evolution of galaxies predicted to occur due to gravitational growth of structure in the standard theory.

These are sometimes called " the four pillars of the Big Bang theory ".

Inflation and baryogenesis remain more speculative features of current Big Bang models: they explain important features of the early universe, but could be replaced by alternative ideas without affecting the rest of the theory.

As a theory relevant to the origin of the universe, the Big Bang has significant bearing on religion and philosophy.

Some researchers still advocate a handful of alternative cosmologies ; however, cosmologists generally agree that the Big Bang theory best explains observations.

One was Lemaître's Big Bang theory, advocated and developed by George Gamow.

Therefore, while the basic features of this epoch have been worked out in the Big Bang theory, the details are largely based on educated guesses.

Big Bang Nucleosynthesis is the theory of the formation of the elements in the early universe.

It was used for many years as a probe of physics at the time of the Big Bang, as the theory of Big Bang nucleosynthesis connects the abundances of primordial light elements with the features of the early universe.

In light of the Big Bang theory, a stylized version of argument has emerged ( sometimes called the Kalam cosmological argument, the following form of which was created by Al-Gazali and then strongly supported by William Lane Craig ):

Later it developed that the Soviets had a very different interpretation of democracy, which will be discussed later, and their judgment never told them that the Big Three should unite in establishing democratic conditions, as we understand them, within their zone of influence.

In the case of the San Andreas fault continental transform, many earthquakes occur away from the plate boundary and are related to strains developed within the broader zone of deformation caused by major irregularities in the fault trace ( e. g., the " Big bend " region ).

This success turned Whitehouse and Higson's career, and they began to appear on shows such as Vic Reeves ' Big Night Out and extensively for the BBC, with Whitehouse appearing on A Bit of Fry and Laurie as a man with a clinical need to have his bottom fondled, and Paul Merton: The Series, then as performer on shows such as Harry Enfield's Television Programme, where he developed numerous characters including DJ Mike Smash of Smashie and Nicey alongside Harry Enfield as Nicey.

On Saturday January 22, the Grateful Dead and Big Brother and the Holding Company came on stage, and 6, 000 people arrived to imbibe punch spiked with LSD and to witness one of the first fully developed light shows of the era.

In 1852 Eliza Ann McAuley found and with help developed the McAuley Cutoff which bypassed much of the difficult climb and descent of Big Hill.

* Hello Kitty: Big City Dreams ( 2008, Nintendo DS )-an adventure game published by Empire Interactive developed by Sanrio Digital.

* ChronoZoom is a timeline for Big History being developed for the International Big History Association by Microsoft Research and University of California, Berkeley

By the late 1970s, the human potential movement developed into an industry ; at the centre of this growth was the Esalen Institute at Big Sur, California.

The post-hardcore style first took shape in Chicago, with bands such as Big Black, The Effigies and Naked Raygun, while later developed in Washington, DC within the community of bands on Ian MacKaye's Dischord Records with bands such as Fugazi, The Nation of Ulysses, and Jawbox.

Later in life, Kelley developed an interest in poetry, eventually publishing the first of two books in a series, The Big Bird's Dream and The Dream Goes On – a series he would never finish.

Not to be outdone, rival Nickelodeon has developed its own slate of stars for its television shows, including Miranda Cosgrove, Victoria Justice, Jennette McCurdy, Ariana Grande and the group Big Time Rush, all of whom have not only starred in TV shows, but recorded albums as well.

With assistance from the National Park Service and the Civilian Conservation Corps ( CCC ), the Tennessee Valley Authority ( TVA ) developed Big Ridge State Park as a demonstration park on the shore of the lake in Union County.

* Big Run, a 1989 arcade game developed by Jaleco

Early white settlements developed along Big Haynes Creek in the northern part of the county, the Yellow River in the middle portion of the county, and Honey Creek in the south.

From these humble dwellings quickly developed a village known as the Big Spring Community.

Closer to town, are the more developed hot springs, currently known simply as " Big Bend Hot Springs " ( formerly " Healing Waters ").

A small hamlet known as Bear Springs developed amidst what was once Big Bear's reservation.

Though Big Star's initial early 1970s career met with no commercial success, they developed an avid cult following and members of later bands like R. E. M.

A long-time Paiste endorser since March 1983, Alex in co-operation with Paiste developed his signature ride which is a 2002 24 " Big ride and was introduced on the 2010 Winter NAMM Show.

He developed an ever larger circle of friends and enemies, including Big Stoop, Captain Judas, Cheery Blaze, Chopstick Joe, Cue Ball and Dude Hennick.

When Albert Einstein developed his general theory of relativity in 1915, this was used as a mathematical starting point for most cosmological theories including the Big Bang and the Steady State theories.