Physical cosmology

Dark flow is an astrophysical term describing a possible non-random component of the peculiar velocity of galaxy clusters.

(This article is about theories of the origin of the universe. For the Björk song, see Cosmogony (song).)("Cosmogenesis" redirects here. For the Obscura album, see Cosmogenesis (album).) Cosmogony (or cosmogeny) is any model concerning the origin of either the cosmos or universe.

A Grand Unified Theory (GUT) is a model in particle physics in which at high energy, the three gauge interactions of the Standard Model which define the electromagnetic, weak, and strong interactions or forces, are merged into one single force.

Tired light is a class of hypothetical redshift mechanisms that was proposed as an alternative explanation for the redshift-distance relationship.

In physical cosmology and astronomy, dark energy is an unknown form of energy which is hypothesized to permeate all of space, tending to accelerate the expansion of the universe.

The inflaton is a hypothetical scalar fieldthat is supposed to be responsible for cosmic inflationin the very early universe.

The ultimate fate of the universe is a topic in physical cosmology.

The accelerating expansion of the universe is the observation that the universe appears to be expanding at an increasing rate.

The cosmic microwave background (CMB) is the thermal radiation left over from the time of recombination in Big Bang cosmology.

Cosmography is the science that maps the general features of the cosmos or universe, describing both heaven and Earth (but without encroaching on geography or astronomy).

The shape of the universe is the and of the Universe, in terms of both curvature and topology (though, strictly speaking, the concept goes beyond both).

Absolute space and time is a concept in physics and philosophy about the properties of the universe.

The cosmos (UK /ˈkɒzmɒs/, US /ˈkɒzmoʊs/) is the universe regarded as a complex and orderly system; the opposite of chaos.

The heat death of the universe is a possible ultimate fate of the universe in which the universe has diminished to a state of no thermodynamic free energy and therefore can no longer sustain processes that increase entropy (including computation and life).

The Big Crunch is one possible scenario for the ultimate fate of the universe, in which the metric expansion of space eventually reverses and the universe recollapses, ultimately ending as a black hole singularity or causing a reformation of the universe starting with another big bang.

Observations suggest that the expansion of the universe will continue forever.

In physics, redshift happens when light or other electromagnetic radiation from an object is increased in wavelength, or shifted to the red end of the spectrum.

Timaeus (/taɪˈmiːəs/; Greek: Τίμαιος, Timaios, pronounced [tǐmaɪ̯os]) is one of Plato's dialogues, mostly in the form of a long monologue given by the title character Timaeus of Locri, written c.

The anthropic principle (from Greek anthropos, meaning "human") is the philosophical consideration that observations of the Universe must be compatible with the conscious and sapient life that observes it.

The multiverse (or meta-universe) is the hypothetical set of finite and infinite possible universes, including the universe in which we live.

In astrophysics and physical cosmology, Olbers' paradox, named after the German astronomer Heinrich Wilhelm Olbers (1758–1840) and also called the "dark night sky paradox", is the argument that the darkness of the night sky conflicts with the assumption of an infinite and eternal static universe.

Cosmology (from the Greek κόσμος, kosmos "world" and -λογία, -logia "study of"), is the study of the origin, evolution, and eventual fate of the universe.

In physics and cosmology, the mathematical universe hypothesis (MUH), also known as the Ultimate Ensemble, is a speculative "theory of everything" (TOE) proposed by the cosmologist Max Tegmark.

The Holmdel Horn Antenna is a large microwave horn antenna that was used as a radio telescope during the 1960s at Bell Telephone Laboratories in Holmdel Township, Monmouth County, New Jersey, United States.

Brane cosmology refers to several theories in particle physics and cosmology related to string theory, superstring theory and M-theory.

The Gruber Prize in Cosmology, established in 2000, is one of three international awards worth US$500,000 made by the Gruber Foundation, a non-profit organization based at Yale University in New Haven, Connecticut.

Physical cosmology is the study of the largest-scale structures and dynamics of the Universe and is concerned with fundamental questions about its origin, structure, evolution, and ultimate fate.

In astronomical spectroscopy, the Gunn–Peterson trough is a feature of the spectra of quasars due to the presence of neutral hydrogen in the Intergalactic Medium (IGM).

In physical cosmology, cosmological perturbation theory is the theory by which the evolution of structure is understood in the big bang model.

The concept of "curvature of space" is fundamental to cosmology.

In astronomy and cosmology, light dark matter refers to dark matter weakly interacting massive particle (WIMP) candidates with masses less than 1 GeV.

The chronology of the universe describes the history and future of the universe according to Big Bang cosmology, the prevailing scientific model of how the universe developed over time from the Planck epoch, using the cosmological time parameter of comoving coordinates.

A non-standard cosmology is any physical cosmological model of the universe that has been, or still is, proposed as an alternative to the Big Bang model of standard physical cosmology.

Ex nihilo is a Latin phrase meaning "out of nothing".

The Sleepwalkers: A History of Man's Changing Vision of the Universe is a 1959 book by Arthur Koestler.

The Dark Matter Particle Explorer, or DAMPE, is a Chinese Academy of Sciences (CAS) satellite which was launched on 17 December 2015 at 00:12 UTC.

In cosmology, baryon acoustic oscillations (BAO) are regular, periodic fluctuations in the density of the visible baryonic matter (normal matter) of the universe.

In physical cosmology, structure formation refers to the formation of galaxies, galaxy clusters and larger structures from small early density fluctuations.

A Universe from Nothing: Why There Is Something Rather than Nothing is a non-fiction book by the physicist Lawrence M.

In astronomy and cosmology, dark fluid is an alternative theory to both dark matter and dark energy and attempts to explain both phenomena in a single framework.

In cosmology, the cosmological constant (usually denoted by the Greek capital letter lambda: Λ) is the value of the energy density of the vacuum of space.

In astrophysics and cosmology scalar field dark matter is a classical, minimally coupled, real scalar field postulated to account for the inferred dark matter.