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    This Review contains major "Glossary of Cosmology"- related terms, short phrases and links grouped together in the form of Encyclopedia article.


  1. Cosmology - The scientific study of the origin, evolution, and fate of the universe. (Web site)
  2. A cosmology is any model said to represent the observed universe.
  3. Cosmology - A summary of research areas at the University of Kansas, with links to activities and personnel. (Web site)
  4. Cosmology : the science of the universe. (Web site)
  5. Cosmology is a branch of astronomy which studies the structure, origins, and space- time relationships of the universe.

Modern Cosmology

  1. Modern cosmology is a highly sophisticated subject funded by governments with hundreds of millions of dollars a year.
  2. MODERN COSMOLOGY is a relatively new invention.
  3. Modern cosmology is like a Superman -comic- book without Superman or humour. (Web site)
  4. Modern cosmology is the understanding of the universe through scientific observation and experiment. (Web site)

Physical Cosmology

  1. Physical cosmology is the science that attempts to explain all observations relevant to the development and characteristics of the universe as a whole. (Web site)
  2. Physical cosmology is a branch of astronomy, and studies the universe in its large-scale structure.
  3. Physical cosmology - The very early universe.
  4. Physical cosmology is a debatable category for this topic, to be sure.
  5. Physical cosmology is only one of the many beliefs associated with cosmology as a whole.

String Cosmology

  1. String cosmology is a rapidly developing field that promises to revolutionise our views of the early Universe.
  2. String Cosmology - A lecture on aspects of superstring theory and cosmology. (Web site)
  3. String cosmology is a relatively new field that tries to apply equations of string theory to solve the questions of early cosmology. (Web site)

Big Bang

  1. Big bang: the origins of the universe. (Web site)
  2. The Big Bang is a scientific theory, and as such stands or falls by its agreement with observations.
  3. The big bang is the expansion or stretching of space. (Web site)


  1. Cosmologists are now scrambling to determine what exactly dark energy is. (Web site)
  2. Cosmologists are perhaps more aware of the need to make their work accessible and coherent to non-scientists as well as to scientists in other disciplines.
  3. Cosmologists are uncertain of the timing of the epoch of galaxy formation and of the details of this complex process.
  4. Cosmologists are using the ``smoothness'' of the dark matter distribution to get a handle on its mass.

General Relativity

  1. General Relativity - A brief history of the development of general relativity with hyperlinks to biographies of each contributor.
  2. General Relativity - A brief overview of general relativity in non-technical terms.
  3. General Relativity - A laymen's guide to the theory of General Relativity.
  4. General Relativity is a "generalized" and enhanced version of special relativity. (Web site)
  5. General Relativity is a complete revision and extension of Straumann's well-known classic textbook General Relativity and Relativistic Astrophysics.


  1. A redshift is a shift in the frequency of a photon toward lower energy, or longer wavelength.
  2. Redshift is a Doppler effect which states that if a galaxy is moving away, the spectral line of that galaxy observed will have a shift to the red end.
  3. Redshift is defined as the change in wavelength of a particular spectral line divided by the unshifted wavelength of that line.
  4. Redshift is defined as the increase in wavelength of a particular spectral line divided by the unshifted wavelength of that line.
  5. Redshift is the amount by which light is shifted toward the red end of an object's spectrum by the expansion of the universe.

Shape of The Universe

  1. The 'shape of the Universe' is an informal name for a subject of investigation within physical cosmology.
  2. The shape of the Universe is a subject of investigation within physical cosmology.
  3. The shape of the universe is a subject of investigation within cosmology.

String Theory

  1. String Theory - The Kaluza-Klein theory initially posited that gravity and electromagnetism can be unified by adding a fifth dimension of compactified space.
  2. String Theory was in trouble. (Web site)
  3. String theory is a background-dependent, perturbative theory of gravity, normally formulated on a flat (Minkowski) spacetime.
  4. String theory is a multidimensional theory based on vibrating strings, as opposed to the point particles described in the Standard Model. (Web site)
  5. String theory is a perfect example of runaway math without a true foundation. (Web site)

Dark Energy

  1. Dark energy is a mysterious repulsive force that causes the universe to expand at an increasing rate.
  2. Dark Energy - The force or energy postulated by cosmologists to explain the acceleration of the expansion of the universe. (Web site)
  3. Dark energy is a mysterious force that causes the speeding up of the universe expansion.
  4. Dark energy is a mysterious force that is accelerating the expansion of the universe. (Web site)
  5. Dark energy is a mysterious pressure that acts in the opposite direction of gravity, forcing the universe to expand faster than it otherwise would.

Cosmological Horizon

  1. The existence, properties, and significance of a cosmological horizon depend on the particular cosmological model being discussed.
  2. In any case, it is interesting to note that the cosmological horizon is a maximal limit of perception and not an actual boundary.
  3. Objects are drawn away from the observer at r=0 towards the cosmological horizon, leading them to fall in after a finite proper time.

Cosmological Constant

  1. Cosmological Constant: The repulive force of empty space introduced by Albert Einstein because he didn't believe that the Universe was dynamic. (Web site)
  2. Cosmological constant is a force term introduced by Einstein into his field equations to permit static, homogenous, isotropic model of the universe.
  3. Cosmological constant: the path back to a given redshift depends on how the universe has expanded since that time. (Web site)
  4. It is common to quote values of energy density directly, though still using the name "cosmological constant". (Web site)
  5. One also often hears the term "cosmological constant" associated with dark energy. (Web site)


  1. A cluster is a group of stars or galaxies. (Web site)
  2. Cluster - A group of galaxies held together by the force of gravity. (Web site)
  3. Cluster: An assemblage of many galaxies.
  4. The cluster was placed in a two-population star field at distances in the range 1-30 Mpc and sky background was added. (Web site)

Cosmic Microwave Background Radiation

  1. Cosmic microwave background radiation is a ---fingerprint--- from the birth of the Universe.
  2. Cosmic microwave background radiation: The remnants of the primordial fireball.
  3. The Cosmic Microwave Background Radiation is a form of electromagnetic radiation that fills the whole of the universe.
  4. The cosmic microwave background radiation is a cosmic remnant. (Web site)
  5. The cosmic microwave background radiation is a remnant of the Big Bang and the fluctuations are the imprint of density contrast in the early universe.

Cosmological Principle

  1. The Cosmological Principle is a general assumption that the matter in the universe is distributed in a fairly homogenous and isotropic manner.
  2. The Cosmological Principle is a principle invoked in cosmology that severely restricts the large variety of possible cosmological theories.
  3. The Cosmological Principle is a principle invoked in cosmology that, when applied, severely restricts the large variety of possible cosmological theories. (Web site)
  4. The cosmological principle is a Copernican idea. (Web site)

Critical Density

  1. Critical Density - The calculated mass density of the universe that stops the expansion of space. (Web site)
  2. Critical density is the dividing line between models of the universe that expand forever ("open models"), and those that recollapse ("closed models"). (Web site)
  3. Critical density: The density of matter that would just halt the expansion of the universe.
  4. Critical density: the value of the average density of the Universe that would produce a Universe with Zero curvature (ie.
  5. The critical density is the demarcation between an open and closed Universe.

Dark Matter

  1. Dark matter is any matter in the Universe which does not give off any light of its own, or does not interact with light the way typical matter does. (Web site)
  2. Dark Matter: the exotic ingredient required by the BB model; a form of matter that does not emit, absorb, or scatter any light. (Web site)
  3. Dark matter is a mysterious substance scientists think accounts for most of the mass in the universe but that is invisible to current instruments. (Web site)
  4. DARK MATTER is a film by opera and theatre director Chen Shi-Zheeng.
  5. Dark Matter is a part of the --omega factor-- or the story of how the universe is expanding or contracting. (Web site)

Early Universe

  1. The early Universe was filled homogeneously and isotropically with an incredibly high energy density and concomitantly huge temperatures and pressures.
  2. The early Universe was radiation dominated, but the present Universe is matter dominated. (Web site)
  3. The early Universe was so hot and dense that it was like the conditions within a particle accelerator or nuclear reactor. (Web site)
  4. The early universe was extremely hot.
  5. The early universe was filled homogeneously and isotropically with a incredibly high energy density and concomitantly huge temperatures and pressures.


  1. Galaxies are a massive gravitationally bound system of stars, an interstellar medium of gas and dust, and an unknown dark matter.
  2. Galaxies are also being destroyed or merged together as well in galaxy cluster s.
  3. Galaxies are also dynamic entities, changing over time. (Web site)
  4. Galaxies are arranged into sheets and filaments surrounding vast empty voids. (Web site)
  5. Galaxies are associated with galaxy clusters, collections of numerous galaxies held in proximity due to their gravity.

Observable Universe

  1. Observable Universe: The Finite Spherical region of Matter and Space that we can see and interact with (within Infinite Eternal Space). (Web site)
  2. The observable Universe was once a region about the size of a grapefruit.
  3. The observable universe is a relatively small region within one of these bubbles as shown in Figure 15-23a. (Web site)
  4. The observable universe was actually only a very small part of the actual universe. (Web site)

Open Universe

  1. An open universe is a model of the universe in which it will expand forever.
  2. An open universe is a universe that is infinite and will expand forever.
  3. An open universe is one that is an open manifold, meaning not compact and without boundary[3].
  4. Open Universe is a program similar to Celestia.
  5. Open Universe: A model of the universe which expands forever and is infinite in space and time, although it begins with a Big Bang.

Phantom Energy

  1. Phantom energy is a form of the dark energy that could be responsible for the puzzling accelerated expansion of the universe. (Web site)
  2. Phantom energy is a hypothetical explanation for dark energy; the puzzling stuff thought to be responsible for the accelerated expansion of the universe. (Web site)
  3. Phantom energy is a hypothetical form of dark energy with equation of state . (Web site)
  4. Phantom energy is a hypothetical form of dark energy with equation of state w < - 1.

Planck Epoch

  1. The Big Bang theory uses Weyl's postulate to unambiguously measure time at any point as the "time since the Planck epoch ".
  2. As before, there have been 60.9 cosmological decades between the Planck epoch and the current epoch.
  3. Approximately 10 -35 seconds after the Planck epoch, the universe expanded exponentially during a period called cosmic inflation.


  1. Quasars are believed to be the most consistently luminous objects in the known universe. (Web site)
  2. Quasars are distant, very energetic, stellar objects that can spew X-rays and visible light equal to the brightness of trillions of stars. (Web site)
  3. Quasars are found to vary in luminosity on a variety of time scales.
  4. Quasars are only seen at great distances (and thus greatly distant times). (Web site)
  5. Quasars are somewhat mysterious objects that populate the early universe. (Web site)


  1. Deuterium - A special form of hydrogen (an isotope called "heavy hydrogen") that has a neutron as well as a proton in its nucleus. (Web site)
  2. Deuterium is a stable isotope of hydrogen, meaning that it is not radioactive and has a very long life span. (Web site)
  3. Deuterium is also called heavy hydrogen.
  4. Deuterium was discovered by Harold Urey, in 1932. (Web site)
  5. Deuterium was the first isotope to be separated from its element in pure form. (Web site)


  1. Cosmos was the generic name given to a series of earth-orbiting satellites by the Soviet Union.
  2. COSMOS is a completely new, totally exclusively game system. (Web site)
  3. COSMOS is the first consumer product ever to use this technology. (Web site)
  4. Cosmos is a city located in Meeker County, Minnesota. (Web site)
  5. Cosmos is another word for universal, not weird.

Anthropic Principle

  1. Anthropic Principle (four versions) The term "anthropic principle" was introduced in 1973 by Brandon Carter.
  2. Anthropic Principle: The Universe must have those properties which allow life to develop within it at some stage in its history.
  3. The Anthropic Principle is a social construct, because it is communicated to other human beings - so it depends on being humans in general being there.
  4. The Anthropic Principle is based on the underlying belief that the universe was created for our benefit. (Web site)
  5. The Anthropic Principle was first defined in 1973, during a synopsia commemorating Copernicus ---s 500th birthday. (Web site)


  1. Baryons are a family of heavyweight particles that includes the proton and neutron. (Web site)
  2. Baryons are distinct from mesons in that mesons are composed of only two quarks.
  3. Baryons are fermions composed of three quarks, while mesons are bosons composed of a quark and an antiquark. (Web site)
  4. Baryons are fermions, while the mesons are bosons.
  5. Baryons are massive particles which are made up of three quarks in the standard model.


  1. Branes are domains or swaths of several spatial dimensions within a higher-dimensional space. (Web site)
  2. Branes are mathematical tools and "philosophy" for string theorists.
  3. Branes are put here and there at will, and supersymmetry is split or not, etc. (Web site)
  4. Branes are simply objects with more dimensions. (Web site)
  5. The branes are then flung apart. (Web site)

Brane Cosmology

  1. Brane cosmology is a protoscience based on some of the latest thinking about the nature of reality.
  2. Brane cosmology is a protoscience motivated by, but not rigorously derived from, superstring theory and M-theory .
  3. Brane cosmology is a version of string theory.
  4. Brane cosmology: an introduction. (Web site)

Bubble Universe Theory

  1. This Bubble universe theory fits well with the widely accepted theory of inflation.
  2. Bubble universe theory (also known as Bubble theory), in which new universes bud off from old ones.
  3. Hi Susan! Yes, I think you are talking about the Bubble universe theory, which is another hypothesis from many others of the multiverse theory. (Web site)

Closed Universe

  1. A closed universe is a result of a high average density (curvature) to space.
  2. A closed universe is like the surface of a 2 dimensional balloon, but in 3 dimensions.
  3. A closed universe is one with speherical geometry.
  4. Closed universe: A universe expanding slowly enough to be braked by gravity.
  5. The closed universe is similar to the surface of a sphere, the size is finite but there is no boundary.

Cosmic Neutrino Background

  1. WMAP has found evidence for this so-called "cosmic neutrino background" from the early universe.
  2. Hence, there is a predicted cosmic neutrino background as dense as the photons which comprise the CMB. (Web site)
  3. This cosmic neutrino background, while unlikely to ever be observed in detail, is analogous to the cosmic microwave background that was emitted much later.

Fred Hoyle

  1. FRED HOYLE is one of the most famous living astronomers in Britain.
  2. Fred Hoyle was a great communicator and popularisor of science, as indeed an eloquent speaker. (Web site)
  3. Fred Hoyle was an important scientist who worked at the frontiers of astronomy and theoretical physics. (Web site)
  4. Fred Hoyle was born in 1915 in Bingley, and educated at Bingley Grammar School and Emmanuel College, Cambridge, where he studied Mathematics. (Web site)
  5. Fred Hoyle was born in 1915 in Yorkshire and studied mathematics and astronomy at Cambridge University.


  1. Helium is the second most abundant element in the known Universe after hydrogen and constitutes 23% of the elemental mass of the universe.
  2. Helium is a colorless, odorless, and non-toxic gas.
  3. Helium is a colorless, odorless, tasteless chemical element.
  4. Helium is the by-product of nuclear fusion involving hydrogen.
  5. Helium is the result of two Hydrogen nuclei being fused.

Horizon Problem

  1. The horizon problem is a problem with the standard cosmological model of the Big Bang which was identified in the 1970s. (Web site)
  2. The horizon problem was finally explained by inflation.
  3. The horizon problem: the universe has a finite age, so even light can only have travelled a finite distance by any given time. (Web site)
  4. This seeming paradox is called the "Horizon problem".


  1. Hydrogen is the most abundant element in the known Universe; helium is second.
  2. Hydrogen is the lightest and most abundant element in the universe. (Web site)
  3. Hydrogen is a means of transporting energy; it is not itself an energy source -- at least not when burned like a conventional fuel.
  4. Hydrogen is the simplest atom provided by nature. (Web site)


  1. M-theory is a cutting-edge theory of physics that deals with the extension of superstring theory. (Web site)
  2. M-theory is a proposed "master theory" that unifies the five superstring theories.
  3. M-theory is a theory of physics that deals with the extension of superstring theory. (Web site)
  4. M-theory was also foreshadowed in the work of Paul Townshend at approximately the same time.

Major Problem

  1. A major problem was the extreme smoothness of the background microwave radiation. (Web site)
  2. The major problem is the existence of dark matter (not dark energy), mainly because we cannot see them.

Missing Mass

  1. Dark energy is also considered a hypothetical component of missing mass.
  2. WHERE IS THE MISSING MASS? The gravatational interaction of galaxies and galaxy clusters shows us that there is more matter in the Universe than we can see. (Web site)
  3. At best case you have evidence that there is "missing mass" somewhere, but you have no idea whether your galactic mass estimation process is even valid. (Web site)


  1. Photons are "accepted' into the bosonic shells and trapped. (Web site)
  2. Photons are absorbed and reradiated more frequently as this takes place, hence the velocity of light decreases with time. (Web site)
  3. Photons are observed to do work.
  4. The photons are "preserved" at that critical absorption frequency for near "eternities". (Web site)
  5. The photons are not arriving at the dark fringes.

Plasma Cosmology

  1. Plasma cosmology is a classic non-standard model which was invented by Hannes Alfven to account for cosmological observations.
  2. Plasma cosmology is a non-standard cosmology[1] which emphasizes the electromagnetic properties of astrophysical plasmas. (Web site)
  3. Plasma cosmology is an alternative cosmology to the Big Bang cosmology.
  4. Plasma cosmology is known as a non-standard cosmology. (Web site)
  5. Plasma cosmology is one non-standard model that may be able to account for Arp's empirical data, possibly without the need for the variable-mass. (Web site)

Static Universe

  1. A static universe is one which is not expanding. (Web site)
  2. The static universe is an interesting concept with a very long and interesting history. (Web site)

Steady State Theory

  1. Steady state theory - An established theory of cosmology in the early and middle 20th century, made obsolete by the success of Big Bang theory.
  2. The Steady State Theory was a true scientific theory and as such it contained predictions that could be tested. (Web site)
  3. The steady state theory was first put forward in 1948, and once enjoyed equal status with the big bang.
  4. The steady state theory was never on a very strong theoretical basis, because it required a negative energy field to create the matter. (Web site)
  5. The steady state theory was wrong. (Web site)


  1. A wormhole is a theoretical opening in space-time that is the mathematical solution to general relativity. (Web site)
  2. A wormhole is a warping of spacetime that causes space to become "folded", supposedly allowing for "shortcuts" through space.
  3. A wormhole is like a cool subway tunnel between two locations.
  4. The name "wormhole" comes from an analogy used to explain the phenomenon.

Related Keywords

    * Acceleration * Alfven * Alpher * Alpher-Bethe-Gamow Paper * Ambiplasma * Amplitude * Antiparticles * Article * Baryogenesis * Baryon * Big Bang Nucleosynthesis * Big Bounce * Big Crunch * Big Freeze * Big Rip * California * Cases * Comoving Distance * Copernican Principle * Cosmic Distance Ladder * Cosmic Inflation * Cosmic Variance * Cosmogony * Cosmological Decade * Curvature * Cyclic Model * Density * De Sitter Universe * Dimensions * Dipole Anisotropy * Dirac Large Numbers Hypothesis * Doppler Effect * Doppler Redshift * Ekpyrotic * Elements * Energy Density * Equivalence Principle * Esoteric Cosmology * Fecund Universes * Flatness Problem * Flat Universe * Galaxy Formation And Evolution * Geometry * Guth * Heat Death * Heat Death of The Universe * Horrendous Space Kablooie * Hoyle * Hubble Law * Inflationary Epoch * Inflationary Universe * Inflaton * Introduction * Jack Sarfatti * John * Kaluza-Klein Theory * Lambda-Cdm Model * Large-Scale Structure of The Cosmos * Law of Three * Local Geometry * Lyman-Alpha Forest * Magnetic Monopoles * Models * Monopoles * Multiverse * Non-Gaussianity * Non-Standard Cosmology * Observational Cosmology * Observational Evidence * Observations * Omega Point * Omniverse * Oscillatory Universe * Particle Horizon * Particle Physics * Philosophy * Picard Horn * Pressure * Primordial Fluctuations * Quantum Cosmology * Ray of Creation * Redshift Survey * Reionization * Relic Particles * Religion * Religious Cosmology * Roman Ring * Sachs-Wolfe Effect * Scalar * Sloan Digital Sky Survey * Standard Model * Stellar Population * Structure Formation * Timeline of Cosmology * Timeline of The Big Bang * Tired Light * Ultimate Fate of The Universe * Universe * Vacuum Energy * Weyl Curvature Hypothesis * Wmap
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