Dr. Bonnor supports the idea that the universe both expands and contracts, that in several billion years the expansion will slow up and reverse itself and that the contraction will set in.

This, he claims, would reasonably account for the expansion of the universe.

The graphic scheme above is an artist's concept illustrating the expansion of a portion of a flat universe.

In 1931 Lemaître went further and suggested that the evident expansion of the universe, if projected back in time, meant that the further in the past the smaller the universe was, until at some finite time in the past all the mass of the Universe was concentrated into a single point, a " primeval atom " where and when the fabric of time and space came into existence.

There were two primary explanations put forth for the expansion of the universe.

Cosmologists are still unable to explain all cosmological phenomena exactly on the basis of known conventional forms of energy, such as those related to the accelerating expansion of the universe.

Cosmologists therefore invoke a yet unexplored form of energy called dark energy ( dark energy is a hypothetical form of energy that permeates all of space and tends to accelerate the expansion of the universe ) which account for certain cosmological observations mostly related to " accelerating expansion of Universe ".

Thus with the expansion of the universe, radiation becomes less dominant than matter.

The very early universe is said to have been ' radiation dominated ' and as such radiation controlled the deceleration of expansion.

As the expansion of the universe continues, matter dilutes even further and the cosmological constant becomes dominant, leading to an acceleration in the universe's expansion.

The solution is an expanding universe ; due to this expansion the radiation and matter in the universe are cooled down and become diluted.

At first, the expansion is slowed down by gravitation due to the radiation and matter content of the universe.

However, as these become diluted, the cosmological constant becomes more dominant and the expansion of the universe starts to accelerate rather than decelerate.

As a rule of thumb, a scattering or a decay process is cosmologically important in a certain cosmological epoch if the time scale describing that process is smaller or comparable to the time scale of the expansion of the universe, which is with being the Hubble constant at that time.

The case for dark energy was strengthened in 1999, when measurements demonstrated that the expansion of the universe has begun to gradually accelerate.

In physical cosmology, cosmic inflation, cosmological inflation or just inflation is the theorized extremely rapid exponential expansion of the early universe by a factor of at least 10 < sup > 78 </ sup > in volume, driven by a negative-pressure vacuum energy density.

As a direct consequence of this expansion, all of the observable universe originated in a small causally connected region.

Another adjunct, the varying speed of light model has also been theorized by Jean-Pierre Petit in 1988, John Moffat in 1992 as well Andreas Albrecht and João Magueijo in 1999, instead of superluminal expansion the speed of light was 60 orders of magnitude faster than its current value solving the horizon and homogeneity problems in the early universe.

Authors writing in the Lovecraftian milieu use elements of the Mythos in an ongoing expansion of the fictional universe.

Uniform cooling of the cosmic microwave background over billions of years is explainable only if the universe is experiencing a metric expansion.

Cleaver said positive dark energy is currently responsible for speeding up the expansion rate of our universe as time moves on.

Roughly 88 % of people affected with AVM are asymptomatic ; often the malformation is discovered as part of an autopsy or during treatment of an unrelated disorder ( called in medicine " an incidental finding "); in rare cases its expansion or a micro-bleed from an AVM in the brain can cause epilepsy, deficit or pain.

A corruption scandal discovered late in his first term involved misdeeds around the expansion of the Beauharnois Canal in Quebec ; this led to extensive inquiries and eventually a Royal Commission, which exposed the Beauharnois Scandal.

However, this would not necessarily be so if other species were to be discovered during a galactic expansion.

The name Pāṇini Backus form has also been suggested in view of the facts that the expansion Backus Normal Form may not be accurate, and that Pāṇini had independently discovered a similar notation earlier.

The 1860s saw rapid commercial expansion after Gabriel Read discovered gold at Gabriel's Gully near Lawrence, and the Central Otago goldrush ensued.

It was at that time that Charles-Eugène Delaunay was studying the perturbative expansion for the Earth-Moon-Sun system, and discovered the so-called " problem of small denominators ".

In 1889, phosphate was discovered in the area, leading to an expansion of the area until the early 1910s.

The effect is named for James Prescott Joule and William Thomson, 1st Baron Kelvin who discovered it in 1852 following earlier work by Joule on Joule expansion, in which a gas undergoes free expansion in a vacuum.

In the 1800s natural gas was discovered which led to the expansion of industries including glass firms, chemical plants, cheese factories, machine shops, brick plants, sawmills, planing mills, tanneries and furniture factories.

They discovered that the Universe is expanding ( see the expansion of the Universe ).

In 1849, coal was discovered in Lens, leading to the expansion of the city, becoming an important industrial center.

An eighth spring, named the Eternal Spring was discovered in 2006, during the expansion and renovation of the resort.

In May 2006, a road dating back 2, 000 years was discovered at the site of Lutetia during expansion of the campus on University of Pierre and Marie Curie.

This expansion discovered mineral wealth that made the fortune of Portugal during the 17th and 18th centuries.

Numerous bugs were discovered in the game with the release of the expansion, which also updated the graphics and geometry engine.

During the expansion of the cemetery in 1952, a necropolis was discovered at S. Materno, with 21 cremation urns were discovered.

The Dilgar were a race depicted in the show as an aggressive, warlike species who began a massive expansion of their empire when it was discovered their sun was soon to go supernova.

It then became the Supernova Cosmology Project, which discovered the accelerating expansion of the universe, for which Muller's graduate student, Saul Perlmutter, shared the 2011 Nobel Prize in Physics.

His recent work on inhomogeneous cosmological models purports to explain certain anomalous effects in the CMB data, and to account for the recently discovered acceleration of the expansion of the universe.

A large body of results from ordinary differential calculus, such as binomial formula and Taylor expansion, have natural q-analogues that were discovered in the 19th century, but remained relatively obscure for a big part of the 20th century, outside of the theory of special functions.

The area of the garden originally consisted of 20 hectares, in 1901 there were 17. 8 hectares and in 1902 came to more than 40 hectares of new acquisitions, which was discovered during the last expansion with considerable resistance.

This process ( cosmogenic nucleosynthesis ) was discovered somewhat by accident during the 1970s: models of Big Bang nucleosynthesis suggested that the amount of deuterium was too large to be consistent with the expansion rate of the universe and there was therefore great interest in processes that could generate deuterium after the Big Bang.