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 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.

and he wrote also the masterpiece of frontier humor, `` The Big Bear Of Arkansas '', in which earthy realism is placed alongside the exaggeration of the backwoods tall-tale and the awe with which man contemplates the grandeur and the mysteries of nature.

Irritating to Hastings is the fact that Poirot will sometimes conceal from him important details of his plans, as in The Big Four where Hastings is kept in the dark throughout the climax.

Hastings is a man who is capable of great bravery and courage, facing death unflinchingly when confronted by The Big Four and possessing unwavering loyalty towards Poirot.

Big business is not taxed in proportion to its capacity and output, and the disproportionate burden falls on small and medium size businesses.

* 1977 – The Big Ear, a radio telescope operated by Ohio State University as part of the SETI project, receives a radio signal from deep space ; the event is named the " Wow!

In Futurama Season 4, Episode 16 " Three Hundred Big Boys ", Kif gives Amy a watch that is shortly after swallowed by a whale named Mushu.

* 1858 – After the original Big Ben, a 14. 5 tonne bell for the Palace of Westminster had cracked during testing, it is recast into the current 13. 76 tonne bell by Whitechapel Bell Foundry.

The Big Book ( from Alcoholics Anonymous ) states that once a person is an alcoholic, they are always an alcoholic, but does not define what is meant by the term " alcoholic " in this context.

From the northern hemisphere, an easy way to find Arcturus is to follow the arc of the handle of the Big Dipper.

It is the star in the tail of the bear closest to its body, and thus the star in the handle of the Big Dipper closest to the bowl.

Big Dipper is the American term for the seven brightest stars of Ursa Major, called the Plough in Britain.

Big Brother is a fictional character in George Orwell's novel Nineteen Eighty-Four.

The people are constantly reminded of this by the phrase " Big Brother is watching you ", which is the core " truth " of the propaganda system in this state.

Physical science uses the Big Bang theory as the commonly accepted scientific theory of the origin of the universe

According to current scientific theory, the cosmos began 13. 7 billion years ago short scale in the Big Bang.

The Big Bounce is a theoretical scientific model of the formation of the known universe.

" She produced visualizations for the Hayden's " Big Bang Theatre " and worked with the Denver Museum of Nature and Science to produce high-resolution data-driven visualizations of terabytes of scientific data for " Black Holes: The Other Side of Infinity ," a digital dome program on black holes.

Since the early twentieth century when astronomer Edwin Hubble first hypothesized that redshift shows the universe is expanding, prevailing scientific opinion has been that the current state of the universe is the result of a process described by the Big Bang.

Along with the production of the atomic bomb, World War II also saw the entrance of an era known as " Big Science " with increased government patronage of scientific research.

The Big Bounce is a theoretical scientific model of the formation of the known universe.

The differences between the young Earth interpretation of Genesis and modern scientific theories such as Big Bang, abiogenesis, and common descent are significant.

LHS staff collaborate with University scientific experts from many fields to develop exhibits such as Big Dinos Return, Forces That Shape the Bay and Nanozone, as well as educational materials for teachers and families.

Nonetheless, Arp has not wavered from his stand against the Big Bang and still publishes articles stating his contrary view in both popular and scientific literature, frequently collaborating with Geoffrey Burbidge ( until his death in 2010 ) and Margaret Burbidge.

These papers were published in reputable scientific journals, and were alleged by their authors to culminate in a proposed theory for describing what occurred at the Big Bang.

Big Science is a term used by scientists and historians of science to describe a series of changes in science which occurred in industrial nations during and after World War II, as scientific progress increasingly came to rely on large-scale projects usually funded by national governments or groups of governments.

* Big staffs: Similarly, the number of practitioners of science on any one project grew as well, creating difficulty, and often controversy, in the assignment of credit for scientific discoveries ( the Nobel Prize system, for example, allows awarding only three individuals in any one topic per year, based on a 19th-century model of the scientific enterprise ).

* Big machines: Ernest Lawrence's cyclotron at his Radiation Laboratory in particular ushered in an era of massive machines ( requiring massive staffs and budgets ) as the tools of basic scientific research.

* Big laboratories: Because of the increase in cost to do basic science ( with the increase of large machines ), centralization of scientific research in large laboratories ( such as Lawrence Berkeley National Laboratory or CERN ) has become a cost-effective strategy, though questions over facility access have become prevalent.

The era of Big Science has provoked criticism that it undermines the basic principles of the scientific method.

... We build our monuments in the name of scientific truth, they built theirs in the name of religious truth ; we use our Big Science to add to our country's prestige, they used their churches for their cities ' prestige ; we build to placate what ex-President Eisenhower suggested could become a dominant scientific caste, they built to please the priests of Isis and Osiris.

The Kabbalah Centre often cites Kabbalah as the inspiration for recent scientific discoveries, including The Big Bang, String Theory, atomic structure, and Newton's Third Law.

Duncan MacGillivray, with explorer David Thompson on his survey of the Canadian Rockies, first encountered a Big Horn Sheep, near Exshaw, on 30 Nov. 1800, which lead to the specimens collected and subsequent scientific naming.