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42 relations: Accelerating expansion of the universe, Astrophysical plasma, Atom, Big Bang, Chronology of the universe, Cosmic background radiation, Cosmic microwave background, Dark Ages Radio Explorer, Dark Energy Survey, Decoupling (cosmology), Degree Angular Scale Interferometer, Diffusion damping, First observation of gravitational waves, Galaxy, Gravitational wave, Gravitational-wave astronomy, Gravitational-wave observatory, Gunn–Peterson trough, History of Earth, Hydrogen, Hydrogen line, Index of physics articles (R), Intensity mapping, List of the most distant astronomical objects, List of time periods, Neutrino decoupling, Observable universe, Olbers' paradox, Outer space, Particle horizon, Physical cosmology, Primordial black hole, Recombination, Reionization, Satellite galaxy, Scale factor (cosmology), Timeline of the formation of the Universe, Universe, Wilkinson Microwave Anisotropy Probe, Wouthuysen–Field coupling, Ylem, Zeldovich pancake.
Accelerating expansion of the universe
The accelerating expansion of the universe is the observation that the universe appears to be expanding at an increasing rate, so that the velocity at which a distant galaxy is receding from the observer is continuously increasing with time.
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Astrophysical plasma
An astrophysical plasma is a plasma (highly ionized gas) that occurs beyond the solar system.
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Atom
An atom is the smallest constituent unit of ordinary matter that has the properties of a chemical element.
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Big Bang
The Big Bang theory is the prevailing cosmological model for the universe from the earliest known periods through its subsequent large-scale evolution.
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Chronology of the universe
The chronology of the universe describes the history and future of the universe according to Big Bang cosmology.
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Cosmic background radiation
Cosmic background radiation is electromagnetic radiation from the big bang.
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Cosmic microwave background
The cosmic microwave background (CMB, CMBR) is electromagnetic radiation as a remnant from an early stage of the universe in Big Bang cosmology.
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Dark Ages Radio Explorer
The Dark Ages Radio Explorer (DARE) mission is a proposed concept lunar orbiter intended to identify redshifted emanations from primeval hydrogen atoms just as the first stars began to emit light.
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Dark Energy Survey
The Dark Energy Survey (DES) is a visible and near-infrared survey that aims to probe the dynamics of the expansion of the Universe and the growth of large-scale structure.
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Decoupling (cosmology)
In cosmology, decoupling refers to a period in the development of the universe when different types of particles fall out of thermal equilibrium with each other.
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Degree Angular Scale Interferometer
The Degree Angular Scale Interferometer (DASI) was a telescope installed at the U.S. National Science Foundation's Amundsen–Scott South Pole Station in Antarctica.
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Diffusion damping
In modern cosmological theory, diffusion damping, also called photon diffusion damping, is a physical process which reduced density inequalities (anisotropies) in the early universe, making the universe itself and the cosmic microwave background radiation (CMB) more uniform.
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First observation of gravitational waves
The first observation of gravitational waves was made on 14 September 2015 and was announced by the LIGO and Virgo collaborations on 11 February 2016.
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Galaxy
A galaxy is a gravitationally bound system of stars, stellar remnants, interstellar gas, dust, and dark matter.
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Gravitational wave
Gravitational waves are the disturbance in the fabric ("curvature") of spacetime generated by accelerated masses and propagate as waves outward from their source at the speed of light.
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Gravitational-wave astronomy
Gravitational-wave astronomy is an emerging branch of observational astronomy which aims to use gravitational waves (minute distortions of spacetime predicted by Einstein's theory of general relativity) to collect observational data about objects such as neutron stars and black holes, events such as supernovae, and processes including those of the early universe shortly after the Big Bang.
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Gravitational-wave observatory
A gravitational-wave observatory (or gravitational-wave detector) is any device designed to measure gravitational waves, tiny distortions of spacetime that were first predicted by Einstein in 1916.
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Gunn–Peterson trough
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).
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History of Earth
The history of Earth concerns the development of planet Earth from its formation to the present day.
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Hydrogen
Hydrogen is a chemical element with symbol H and atomic number 1.
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Hydrogen line
The hydrogen line, 21-centimeter line or H I line refers to the electromagnetic radiation spectral line that is created by a change in the energy state of neutral hydrogen atoms.
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Index of physics articles (R)
The index of physics articles is split into multiple pages due to its size.
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Intensity mapping
In cosmology, intensity mapping is an observational technique for surveying the large-scale structure of the universe by using the integrated radio emission from unresolved gas clouds.
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List of the most distant astronomical objects
This article documents the most distant astronomical objects so far discovered, and the time periods in which they were so classified.
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List of time periods
The categorization of the past into discrete, quantified named blocks of time is called periodization.
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Neutrino decoupling
In Big Bang cosmology, neutrino decoupling refers to the epoch at which neutrinos ceased interacting with baryonic matter, and thereby ceased influencing the dynamics of the universe at early times.
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Observable universe
The observable universe is a spherical region of the Universe comprising all matter that can be observed from Earth at the present time, because electromagnetic radiation from these objects has had time to reach Earth since the beginning of the cosmological expansion.
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Olbers' paradox
In astrophysics and physical cosmology, Olbers' paradox, named after the German astronomer Heinrich Wilhelm Olbers (1758–1840), also known as 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.
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Outer space
Outer space, or just space, is the expanse that exists beyond the Earth and between celestial bodies.
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Particle horizon
The particle horizon (also called the cosmological horizon, the comoving horizon (in Dodelson's text), or the cosmic light horizon) is the maximum distance from which particles could have traveled to the observer in the age of the universe.
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Physical cosmology
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.
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Primordial black hole
Primordial black holes are a hypothetical type of black hole that formed soon after the Big Bang.
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Recombination
Recombination may refer to.
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Reionization
In the field of Big Bang theory, and cosmology, reionization is the process that caused the matter in the universe to reionize after the lapse of the "dark ages".
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Satellite galaxy
A satellite galaxy is a smaller companion galaxy that travels on bound orbits within the gravitational potential of a more massive and luminous host galaxy (also known as the primary galaxy).
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Scale factor (cosmology)
The relative expansion of the universe is parametrized by a dimensionless scale factor a. Also known as the cosmic scale factor or sometimes the Robertson–Walker scale factor, this is a key parameter of the Friedmann equations.
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Timeline of the formation of the Universe
This is a timeline of the formation and subsequent evolution of the Universe from the Big Bang (13.799 ± 0.021 billion years ago) to the present day.
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Universe
The Universe is all of space and time and their contents, including planets, stars, galaxies, and all other forms of matter and energy.
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Wilkinson Microwave Anisotropy Probe
The Wilkinson Microwave Anisotropy Probe (WMAP), originally known as the Microwave Anisotropy Probe (MAP), was a spacecraft operating from 2001 to 2010 which measured temperature differences across the sky in the cosmic microwave background (CMB) – the radiant heat remaining from the Big Bang.
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Wouthuysen–Field coupling
Wouthuysen–Field coupling, or the Wouthuysen–Field effect, is a mechanism that couples the excitation temperature, also called the spin temperature, of neutral hydrogen to Lyman-alpha radiation.
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Ylem
Ylem is a term that was used by George Gamow, his student Ralph Alpher, and their associates in the late 1940s for a hypothetical original substance or condensed state of matter, which became subatomic particles and elements as we understand them today.
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Zeldovich pancake
A Zel'dovich pancake is a theoretical condensation of gas out of a primordial density fluctuation following the Big Bang.
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Redirects here:
Epoch of recombination, Recombination (astronomy).
References
[1] https://en.wikipedia.org/wiki/Recombination_(cosmology)
