Faster access than browser!
241 relations: Absorption spectroscopy, Accelerating expansion of the universe, Accretion disk, Age of the universe, Alexander Friedmann, American Journal of Physics, Andromeda Galaxy, Angle, Aristarkh Belopolsky, Astronomical spectroscopy, Astronomy, Astronomy & Astrophysics, Astrophysics and Space Science, Asymptote, Atmosphere of Earth, Atom, Barycenter, Big Bang, Binary star, Black body, Black hole, Blueshift, Brady Haran, Brightness, C. H. D. Buys Ballot, Cambridge University Press, Carnegie Institution for Science, Celestial sphere, CfA Redshift Survey, CfA2 Great Wall, Chemical element, Christian Doppler, Circular symmetry, Classical physics, Color, Color temperature, Comoving and proper distances, Conservation of energy, Coordinate system, Copernican principle, Cosmic Background Explorer, Cosmic distance ladder, Cosmic microwave background, Cosmic neutrino background, Cosmic time, Cosmological principle, Cosmology, Cosmos Redshift 7, Curvature, Dark matter, ..., Data set, DEEP2 Redshift Survey, Dielectric, Dimensionless quantity, Distance, Doppler broadening, Doppler effect, Doppler radar, Dynamics (mechanics), Edward Robert Harrison, Edwin Hubble, Einstein field equations, Electric charge, Electromagnetic radiation, Electromagnetic spectrum, Elementary particle, Emission spectrum, Energy, Entropy, Equivalence principle, Event horizon, Exoplanet, Expansion of the universe, Extinction (astronomy), FAQ, Frame of reference, Fraunhofer lines, Frequency, Friedmann equations, Friedmann–Lemaître–Robertson–Walker metric, Fritz Zwicky, Function (mathematics), Galaxy, Galaxy rotation curve, Gamma-ray burst, General relativity, General Relativity and Gravitation, Geodesic, Geoffrey Burbidge, GN-z11, Gravitational constant, Gravitational field, Gravitational redshift, Gravitational wave background, Gravity, GRB 090423, Halton Arp, Helios (spacecraft), Helioseismology, Hermann Carl Vogel, Hippolyte Fizeau, Hubble Deep Field, Hubble Space Telescope, Hubble Ultra-Deep Field, Hubble's law, Hydrogen, Hydrogen line, Hydrogen spectral series, Inflation (cosmology), Infrared, Interstellar cloud, Interstellar medium, Ives–Stilwell experiment, Jan Oort, John C. Baez, Journal of the Royal Astronomical Society of Canada, K correction, Kinetic theory of gases, Laboratory, Lambda-CDM model, Life, Light, Light intensity, Light-year, Line-of-sight propagation, Local Group, Local reference frame, Lorentz covariance, Lorentz factor, Lowell Observatory, Luminosity, Lyman-break galaxy, MacTutor History of Mathematics archive, Magnitude (mathematics), Mass, Mass-to-light ratio, Matter, Mössbauer effect, Methods of detecting exoplanets, Metre per second, Metric (mathematics), Metric tensor, Milky Way, Minkowski space, Monotonic function, Monthly Notices of the Royal Astronomical Society, Motion (physics), NASA, Nature (journal), Neil Gehrels Swift Observatory, Netherlands, Neutron star, Non-standard cosmology, Observable universe, Observational error, Optical filter, Orange (colour), Orbit, Parsec, Peculiar velocity, Philosophical Transactions of the Royal Society, Photometric redshift, Photometry (astronomy), Photon energy, Photosphere, Physical optics, Physics, Pitch (music), Planet, Popular Astronomy (US magazine), Pound–Rebka experiment, Proceedings of the National Academy of Sciences of the United States of America, Quasar, Radar gun, Radiative transfer, Randomness, Rayleigh scattering, Recessional velocity, Redshift-space distortions, Refractive index, Relativistic Doppler effect, Right angle, Rossiter–McLaughlin effect, Rotation, Sachs–Wolfe effect, Scale factor (cosmology), Scattering, Schwarzschild coordinates, Schwarzschild metric, Scientific American, Sloan Digital Sky Survey, Sound, Space telescope, Spacetime, Spacetime topology, Special relativity, Spectral line, Spectrograph, Spectroscopy, Speed of light, Spiral galaxy, Star, Stationary spacetime, Stellar population, Steven Weinberg, Sun, Supercluster, Telescope, Temperature, The Astrophysical Journal, The Feynman Lectures on Physics, The First Three Minutes, The New York Times, Time dilation, Tired light, Type Ia supernova, UDFy-38135539, ULAS J1342+0928, Universe, University of Nottingham, University of St Andrews, Variance, Vector projection, Velocity, Venus, Vesto Slipher, Virgo Cluster, Virial theorem, Visible spectrum, W. M. Keck Observatory, Walter Sydney Adams, Wave, Wavelength, Whistler (radio), White noise, Wilkinson Microwave Anisotropy Probe, Willem de Sitter, William Huggins, Wolf effect, Zeitschrift für Physik, 2dF Galaxy Redshift Survey. Expand index (191 more) »
Absorption spectroscopy
Absorption spectroscopy refers to spectroscopic techniques that measure the absorption of radiation, as a function of frequency or wavelength, due to its interaction with a sample.
New!!: Redshift and Absorption spectroscopy · See more »
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.
New!!: Redshift and Accelerating expansion of the universe · See more »
Accretion disk
An accretion disk is a structure (often a circumstellar disk) formed by diffused material in orbital motion around a massive central body.
New!!: Redshift and Accretion disk · See more »
Age of the universe
In physical cosmology, the age of the universe is the time elapsed since the Big Bang.
New!!: Redshift and Age of the universe · See more »
Alexander Friedmann
Alexander Alexandrovich Friedmann (also spelled Friedman or Fridman; Алекса́ндр Алекса́ндрович Фри́дман) (June 16, 1888 – September 16, 1925) was a Russian and Soviet physicist and mathematician.
New!!: Redshift and Alexander Friedmann · See more »
American Journal of Physics
The American Journal of Physics is a monthly, peer-reviewed scientific journal published by the American Association of Physics Teachers and the American Institute of Physics.
New!!: Redshift and American Journal of Physics · See more »
Andromeda Galaxy
The Andromeda Galaxy, also known as Messier 31, M31, or NGC 224, is a spiral galaxy approximately 780 kiloparsecs (2.5 million light-years) from Earth, and the nearest major galaxy to the Milky Way.
New!!: Redshift and Andromeda Galaxy · See more »
Angle
In plane geometry, an angle is the figure formed by two rays, called the sides of the angle, sharing a common endpoint, called the vertex of the angle.
New!!: Redshift and Angle · See more »
Aristarkh Belopolsky
Aristarkh Apollonovich Belopolsky (Аристарх Аполлонович Белопольский), Moscow – 16 May 1934, Pulkovo, Leningrad) was a Russian astronomer. He was born in Moscow but his father's ancestors are from a Serbian town called Belo Polje.
New!!: Redshift and Aristarkh Belopolsky · See more »
Astronomical spectroscopy
Astronomical spectroscopy is the study of astronomy using the techniques of spectroscopy to measure the spectrum of electromagnetic radiation, including visible light and radio, which radiates from stars and other celestial objects.
New!!: Redshift and Astronomical spectroscopy · See more »
Astronomy
Astronomy (from ἀστρονομία) is a natural science that studies celestial objects and phenomena.
New!!: Redshift and Astronomy · See more »
Astronomy & Astrophysics
Astronomy & Astrophysics is a peer-reviewed scientific journal covering theoretical, observational, and instrumental astronomy and astrophysics.
New!!: Redshift and Astronomy & Astrophysics · See more »
Astrophysics and Space Science
Astrophysics and Space Science is a bimonthly peer-reviewed scientific journal covering astronomy, astrophysics, and space science and astrophysical aspects of astrobiology.
New!!: Redshift and Astrophysics and Space Science · See more »
Asymptote
In analytic geometry, an asymptote of a curve is a line such that the distance between the curve and the line approaches zero as one or both of the x or y coordinates tends to infinity.
New!!: Redshift and Asymptote · See more »
Atmosphere of Earth
The atmosphere of Earth is the layer of gases, commonly known as air, that surrounds the planet Earth and is retained by Earth's gravity.
New!!: Redshift and Atmosphere of Earth · See more »
Atom
An atom is the smallest constituent unit of ordinary matter that has the properties of a chemical element.
New!!: Redshift and Atom · See more »
Barycenter
The barycenter (or barycentre; from the Ancient Greek βαρύς heavy + κέντρον centre) is the center of mass of two or more bodies that are orbiting each other, which is the point around which they both orbit.
New!!: Redshift and Barycenter · See more »
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.
New!!: Redshift and Big Bang · See more »
Binary star
A binary star is a star system consisting of two stars orbiting around their common barycenter.
New!!: Redshift and Binary star · See more »
Black body
A black body is an idealized physical body that absorbs all incident electromagnetic radiation, regardless of frequency or angle of incidence.
New!!: Redshift and Black body · See more »
Black hole
A black hole is a region of spacetime exhibiting such strong gravitational effects that nothing—not even particles and electromagnetic radiation such as light—can escape from inside it.
New!!: Redshift and Black hole · See more »
Blueshift
A blueshift is any decrease in wavelength, with a corresponding increase in frequency, of an electromagnetic wave; the opposite effect is referred to as redshift.
New!!: Redshift and Blueshift · See more »
Brady Haran
Brady John Haran (born 18 June 1976) is an Australian-born British independent filmmaker and video journalist who is known for his educational videos and documentary films produced for BBC News and his YouTube channels, the most notable being Periodic Videos and Numberphile.
New!!: Redshift and Brady Haran · See more »
Brightness
Brightness is an attribute of visual perception in which a source appears to be radiating or reflecting light.
New!!: Redshift and Brightness · See more »
C. H. D. Buys Ballot
Christophorus Henricus Diedericus Buys Ballot (October 10, 1817 – February 3, 1890) was a Dutch chemist and meteorologist after whom Buys Ballot's law and the Buys Ballot table are named.
New!!: Redshift and C. H. D. Buys Ballot · See more »
Cambridge University Press
Cambridge University Press (CUP) is the publishing business of the University of Cambridge.
New!!: Redshift and Cambridge University Press · See more »
Carnegie Institution for Science
The Carnegie Institution of Washington (the organization's legal name), known also for public purposes as the Carnegie Institution for Science (CIS), is an organization in the United States established to fund and perform scientific research.
New!!: Redshift and Carnegie Institution for Science · See more »
Celestial sphere
In astronomy and navigation, the celestial sphere is an abstract sphere with an arbitrarily large radius concentric to Earth.
New!!: Redshift and Celestial sphere · See more »
CfA Redshift Survey
The Center for Astrophysics (CfA) Redshift Survey was the first attempt to map the large-scale structure of the universe.
New!!: Redshift and CfA Redshift Survey · See more »
CfA2 Great Wall
The Great Wall (also called Coma Wall), sometimes specifically referred to as the CfA2 Great Wall, is an immense galaxy filament.
New!!: Redshift and CfA2 Great Wall · See more »
Chemical element
A chemical element is a species of atoms having the same number of protons in their atomic nuclei (that is, the same atomic number, or Z).
New!!: Redshift and Chemical element · See more »
Christian Doppler
Christian Andreas Doppler (29 November 1803 – 17 March 1853) was an Austrian mathematician and physicist.
New!!: Redshift and Christian Doppler · See more »
Circular symmetry
In geometry, circular symmetry is a type of continuous symmetry for a planar object that can be rotated by any arbitrary angle and map onto itself.
New!!: Redshift and Circular symmetry · See more »
Classical physics
Classical physics refers to theories of physics that predate modern, more complete, or more widely applicable theories.
New!!: Redshift and Classical physics · See more »
Color
Color (American English) or colour (Commonwealth English) is the characteristic of human visual perception described through color categories, with names such as red, orange, yellow, green, blue, or purple.
New!!: Redshift and Color · See more »
Color temperature
The color temperature of a light source is the temperature of an ideal black-body radiator that radiates light of a color comparable to that of the light source.
New!!: Redshift and Color temperature · See more »
Comoving and proper distances
In standard cosmology, comoving distance and proper distance are two closely related distance measures used by cosmologists to define distances between objects.
New!!: Redshift and Comoving and proper distances · See more »
Conservation of energy
In physics, the law of conservation of energy states that the total energy of an isolated system remains constant, it is said to be ''conserved'' over time.
New!!: Redshift and Conservation of energy · See more »
Coordinate system
In geometry, a coordinate system is a system which uses one or more numbers, or coordinates, to uniquely determine the position of the points or other geometric elements on a manifold such as Euclidean space.
New!!: Redshift and Coordinate system · See more »
Copernican principle
In physical cosmology, the Copernican principle, is an alternative name of the mediocrity principle, or the principle of relativity, stating that humans (the Earth, or the Solar system) are not privileged observers of the universe.
New!!: Redshift and Copernican principle · See more »
Cosmic Background Explorer
The Cosmic Background Explorer (COBE), also referred to as Explorer 66, was a satellite dedicated to cosmology, which operated from 1989 to 1993.
New!!: Redshift and Cosmic Background Explorer · See more »
Cosmic distance ladder
The cosmic distance ladder (also known as the extragalactic distance scale) is the succession of methods by which astronomers determine the distances to celestial objects.
New!!: Redshift and Cosmic distance ladder · See more »
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.
New!!: Redshift and Cosmic microwave background · See more »
Cosmic neutrino background
The cosmic neutrino background (CNB, CνB) is the universe's background particle radiation composed of neutrinos.
New!!: Redshift and Cosmic neutrino background · See more »
Cosmic time
Cosmic time (also known as time since the big bang) is the time coordinate commonly used in the Big Bang models of physical cosmology.
New!!: Redshift and Cosmic time · See more »
Cosmological principle
In modern physical cosmology, the cosmological principle is the notion that the spatial distribution of matter in the universe is homogeneous and isotropic when viewed on a large enough scale, since the forces are expected to act uniformly throughout the universe, and should, therefore, produce no observable irregularities in the large-scale structuring over the course of evolution of the matter field that was initially laid down by the Big Bang.
New!!: Redshift and Cosmological principle · See more »
Cosmology
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.
New!!: Redshift and Cosmology · See more »
Cosmos Redshift 7
Cosmos Redshift 7 (also known as COSMOS Redshift 7, Galaxy Cosmos Redshift 7, Galaxy CR7 or CR7) is a high-redshift Lyman-alpha emitter galaxy (meaning CR7 is one of the oldest, most distant galaxies), in the constellation Sextans, about 12.9 billion light travel distance years from Earth, reported to contain the first stars (first generation; Population III)—formed soon after the Big Bang during the reionisation epoch (redshift, z ∼ 6−7), when the Universe was about 800 million years old—to have provided the chemical elements (like oxygen, nitrogen, carbon, calcium and iron) needed for the later formation of planets and life as it is known.
New!!: Redshift and Cosmos Redshift 7 · See more »
Curvature
In mathematics, curvature is any of a number of loosely related concepts in different areas of geometry.
New!!: Redshift and Curvature · See more »
Dark matter
Dark matter is a theorized form of matter that is thought to account for approximately 80% of the matter in the universe, and about a quarter of its total energy density.
New!!: Redshift and Dark matter · See more »
Data set
A data set (or dataset) is a collection of data.
New!!: Redshift and Data set · See more »
DEEP2 Redshift Survey
The DEEP2 Survey or DEEP2 was a two-phased Redshift survey of the Redshift z.
New!!: Redshift and DEEP2 Redshift Survey · See more »
Dielectric
A dielectric (or dielectric material) is an electrical insulator that can be polarized by an applied electric field.
New!!: Redshift and Dielectric · See more »
Dimensionless quantity
In dimensional analysis, a dimensionless quantity is a quantity to which no physical dimension is assigned.
New!!: Redshift and Dimensionless quantity · See more »
Distance
Distance is a numerical measurement of how far apart objects are.
New!!: Redshift and Distance · See more »
Doppler broadening
In atomic physics, Doppler broadening is the broadening of spectral lines due to the Doppler effect caused by a distribution of velocities of atoms or molecules.
New!!: Redshift and Doppler broadening · See more »
Doppler effect
The Doppler effect (or the Doppler shift) is the change in frequency or wavelength of a wave in relation to observer who is moving relative to the wave source.
New!!: Redshift and Doppler effect · See more »
Doppler radar
A Doppler radar is a specialized radar that uses the Doppler effect to produce velocity data about objects at a distance.
New!!: Redshift and Doppler radar · See more »
Dynamics (mechanics)
Dynamics is the branch of applied mathematics (specifically classical mechanics) concerned with the study of forces and torques and their effect on motion, as opposed to kinematics, which studies the motion of objects without reference to these forces.
New!!: Redshift and Dynamics (mechanics) · See more »
Edward Robert Harrison
Edward R. "Ted" Harrison (8 January 1919 – 29 January 2007) was a British astronomer and cosmologist, noted for his work about the increase of fluctuations in the expanding universe, for his explanation of Olbers' Paradox, and for his books on cosmology for lay readers.
New!!: Redshift and Edward Robert Harrison · See more »
Edwin Hubble
Edwin Powell Hubble (November 20, 1889 – September 28, 1953) was an American astronomer.
New!!: Redshift and Edwin Hubble · See more »
Einstein field equations
The Einstein field equations (EFE; also known as Einstein's equations) comprise the set of 10 equations in Albert Einstein's general theory of relativity that describe the fundamental interaction of gravitation as a result of spacetime being curved by mass and energy.
New!!: Redshift and Einstein field equations · See more »
Electric charge
Electric charge is the physical property of matter that causes it to experience a force when placed in an electromagnetic field.
New!!: Redshift and Electric charge · See more »
Electromagnetic radiation
In physics, electromagnetic radiation (EM radiation or EMR) refers to the waves (or their quanta, photons) of the electromagnetic field, propagating (radiating) through space-time, carrying electromagnetic radiant energy.
New!!: Redshift and Electromagnetic radiation · See more »
Electromagnetic spectrum
The electromagnetic spectrum is the range of frequencies (the spectrum) of electromagnetic radiation and their respective wavelengths and photon energies.
New!!: Redshift and Electromagnetic spectrum · See more »
Elementary particle
In particle physics, an elementary particle or fundamental particle is a particle with no substructure, thus not composed of other particles.
New!!: Redshift and Elementary particle · See more »
Emission spectrum
The emission spectrum of a chemical element or chemical compound is the spectrum of frequencies of electromagnetic radiation emitted due to an atom or molecule making a transition from a high energy state to a lower energy state.
New!!: Redshift and Emission spectrum · See more »
Energy
In physics, energy is the quantitative property that must be transferred to an object in order to perform work on, or to heat, the object.
New!!: Redshift and Energy · See more »
Entropy
In statistical mechanics, entropy is an extensive property of a thermodynamic system.
New!!: Redshift and Entropy · See more »
Equivalence principle
In the theory of general relativity, the equivalence principle is any of several related concepts dealing with the equivalence of gravitational and inertial mass, and to Albert Einstein's observation that the gravitational "force" as experienced locally while standing on a massive body (such as the Earth) is the same as the pseudo-force experienced by an observer in a non-inertial (accelerated) frame of reference.
New!!: Redshift and Equivalence principle · See more »
Event horizon
In general relativity, an event horizon is a region in spacetime beyond which events cannot affect an outside observer.
New!!: Redshift and Event horizon · See more »
Exoplanet
An exoplanet or extrasolar planet is a planet outside our solar system.
New!!: Redshift and Exoplanet · See more »
Expansion of the universe
The expansion of the universe is the increase of the distance between two distant parts of the universe with time.
New!!: Redshift and Expansion of the universe · See more »
Extinction (astronomy)
In astronomy, extinction is the absorption and scattering of electromagnetic radiation by dust and gas between an emitting astronomical object and the observer.
New!!: Redshift and Extinction (astronomy) · See more »
FAQ
Frequently asked questions (FAQ) or Questions and Answers (Q&A), are listed questions and answers, all supposed to be commonly asked in some context, and pertaining to a particular topic.
New!!: Redshift and FAQ · See more »
Frame of reference
In physics, a frame of reference (or reference frame) consists of an abstract coordinate system and the set of physical reference points that uniquely fix (locate and orient) the coordinate system and standardize measurements.
New!!: Redshift and Frame of reference · See more »
Fraunhofer lines
In physics and optics, the Fraunhofer lines are a set of spectral lines named after the German physicist Joseph von Fraunhofer (1787–1826).
New!!: Redshift and Fraunhofer lines · See more »
Frequency
Frequency is the number of occurrences of a repeating event per unit of time.
New!!: Redshift and Frequency · See more »
Friedmann equations
The Friedmann equations are a set of equations in physical cosmology that govern the expansion of space in homogeneous and isotropic models of the universe within the context of general relativity.
New!!: Redshift and Friedmann equations · See more »
Friedmann–Lemaître–Robertson–Walker metric
The Friedmann–Lemaître–Robertson–Walker (FLRW) metric is an exact solution of Einstein's field equations of general relativity; it describes a homogeneous, isotropic, expanding or contracting universe that is path connected, but not necessarily simply connected.
New!!: Redshift and Friedmann–Lemaître–Robertson–Walker metric · See more »
Fritz Zwicky
Fritz Zwicky (February 14, 1898 – February 8, 1974) was a Swiss astronomer.
New!!: Redshift and Fritz Zwicky · See more »
Function (mathematics)
In mathematics, a function was originally the idealization of how a varying quantity depends on another quantity.
New!!: Redshift and Function (mathematics) · See more »
Galaxy
A galaxy is a gravitationally bound system of stars, stellar remnants, interstellar gas, dust, and dark matter.
New!!: Redshift and Galaxy · See more »
Galaxy rotation curve
The rotation curve of a disc galaxy (also called a velocity curve) is a plot of the orbital speeds of visible stars or gas in that galaxy versus their radial distance from that galaxy's centre.
New!!: Redshift and Galaxy rotation curve · See more »
Gamma-ray burst
In gamma-ray astronomy, gamma-ray bursts (GRBs) are extremely energetic explosions that have been observed in distant galaxies.
New!!: Redshift and Gamma-ray burst · See more »
General relativity
General relativity (GR, also known as the general theory of relativity or GTR) is the geometric theory of gravitation published by Albert Einstein in 1915 and the current description of gravitation in modern physics.
New!!: Redshift and General relativity · See more »
General Relativity and Gravitation
General Relativity and Gravitation is a monthly peer-reviewed scientific journal.
New!!: Redshift and General Relativity and Gravitation · See more »
Geodesic
In differential geometry, a geodesic is a generalization of the notion of a "straight line" to "curved spaces".
New!!: Redshift and Geodesic · See more »
Geoffrey Burbidge
Geoffrey Ronald Burbidge FRS (24 September 1925 – 26 January 2010) was an English astronomy professor and theoretical astrophysicist, most recently at the University of California, San Diego.
New!!: Redshift and Geoffrey Burbidge · See more »
GN-z11
GN-z11 is a high-redshift galaxy found in the constellation Ursa Major.
New!!: Redshift and GN-z11 · See more »
Gravitational constant
The gravitational constant (also known as the "universal gravitational constant", the "Newtonian constant of gravitation", or the "Cavendish gravitational constant"), denoted by the letter, is an empirical physical constant involved in the calculation of gravitational effects in Sir Isaac Newton's law of universal gravitation and in Albert Einstein's general theory of relativity.
New!!: Redshift and Gravitational constant · See more »
Gravitational field
In physics, a gravitational field is a model used to explain the influence that a massive body extends into the space around itself, producing a force on another massive body.
New!!: Redshift and Gravitational field · See more »
Gravitational redshift
In astrophysics, gravitational redshift or Einstein shift is the process by which electromagnetic radiation originating from a source that is in a gravitational field is reduced in frequency, or redshifted, when observed in a region at a higher gravitational potential.
New!!: Redshift and Gravitational redshift · See more »
Gravitational wave background
The gravitational wave background (also GWB and stochastic background) is a random gravitational wave signal produced by a large number of weak, independent, and unresolved sources.
New!!: Redshift and Gravitational wave background · See more »
Gravity
Gravity, or gravitation, is a natural phenomenon by which all things with mass or energy—including planets, stars, galaxies, and even light—are brought toward (or gravitate toward) one another.
New!!: Redshift and Gravity · See more »
GRB 090423
GRB 090423 was a gamma-ray burst (GRB) detected by the Swift Gamma-Ray Burst Mission on April 23, 2009 at 07:55:19 UTC whose afterglow was detected in the infrared and enabled astronomers to determine that its redshift is z.
New!!: Redshift and GRB 090423 · See more »
Halton Arp
Halton Christian "Chip" Arp (March 21, 1927 – December 28, 2013) was an American astronomer.
New!!: Redshift and Halton Arp · See more »
Helios (spacecraft)
Helios-A and Helios-B (also known as and), are a pair of probes launched into heliocentric orbit for the purpose of studying solar processes.
New!!: Redshift and Helios (spacecraft) · See more »
Helioseismology
Helioseismology, a term coined by Douglas Gough, is the study of the structure and dynamics of the Sun through its oscillations.
New!!: Redshift and Helioseismology · See more »
Hermann Carl Vogel
Hermann Carl Vogel (April 3, 1841 – August 13, 1907) was a German astrophysicist.
New!!: Redshift and Hermann Carl Vogel · See more »
Hippolyte Fizeau
Armand Hippolyte Louis Fizeau FRS FRSE MIF (23 September 181918 September 1896) was a French physicist, best known for measuring the speed of light in the namesake Fizeau experiment.
New!!: Redshift and Hippolyte Fizeau · See more »
Hubble Deep Field
The Hubble Deep Field (HDF) is an image of a small region in the constellation Ursa Major, constructed from a series of observations by the Hubble Space Telescope.
New!!: Redshift and Hubble Deep Field · See more »
Hubble Space Telescope
The Hubble Space Telescope (HST) is a space telescope that was launched into low Earth orbit in 1990 and remains in operation.
New!!: Redshift and Hubble Space Telescope · See more »
Hubble Ultra-Deep Field
The Hubble Ultra-Deep Field (HUDF) is an image of a small region of space in the constellation Fornax, containing an estimated 10,000 galaxies.
New!!: Redshift and Hubble Ultra-Deep Field · See more »
Hubble's law
Hubble's law is the name for the observation in physical cosmology that.
New!!: Redshift and Hubble's law · See more »
Hydrogen
Hydrogen is a chemical element with symbol H and atomic number 1.
New!!: Redshift and Hydrogen · See more »
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.
New!!: Redshift and Hydrogen line · See more »
Hydrogen spectral series
The emission spectrum of atomic hydrogen is divided into a number of spectral series, with wavelengths given by the Rydberg formula.
New!!: Redshift and Hydrogen spectral series · See more »
Inflation (cosmology)
In physical cosmology, cosmic inflation, cosmological inflation, or just inflation, is a theory of exponential expansion of space in the early universe.
New!!: Redshift and Inflation (cosmology) · See more »
Infrared
Infrared radiation (IR) is electromagnetic radiation (EMR) with longer wavelengths than those of visible light, and is therefore generally invisible to the human eye (although IR at wavelengths up to 1050 nm from specially pulsed lasers can be seen by humans under certain conditions). It is sometimes called infrared light.
New!!: Redshift and Infrared · See more »
Interstellar cloud
An interstellar cloud is generally an accumulation of gas, plasma, and dust in our and other galaxies.
New!!: Redshift and Interstellar cloud · See more »
Interstellar medium
In astronomy, the interstellar medium (ISM) is the matter and radiation that exists in the space between the star systems in a galaxy.
New!!: Redshift and Interstellar medium · See more »
Ives–Stilwell experiment
The Ives–Stilwell experiment tested the contribution of relativistic time dilation to the Doppler shift of light.
New!!: Redshift and Ives–Stilwell experiment · See more »
Jan Oort
Jan Hendrik Oort (or; 28 April 1900 – 5 November 1992) was a Dutch astronomer who made significant contributions to the understanding of the Milky Way and who was a pioneer in the field of radio astronomy.
New!!: Redshift and Jan Oort · See more »
John C. Baez
John Carlos Baez (born June 12, 1961) is an American mathematical physicist and a professor of mathematics at the University of California, Riverside (UCR) in Riverside, California.
New!!: Redshift and John C. Baez · See more »
Journal of the Royal Astronomical Society of Canada
The Journal of the Royal Astronomical Society of Canada is a bimonthly peer-reviewed scientific journal published by the Royal Astronomical Society of Canada since 1907.
New!!: Redshift and Journal of the Royal Astronomical Society of Canada · See more »
K correction
K correction is a correction to an astronomical object's magnitude (or equivalently, its flux) that allows a measurement of a quantity of light from an object at a redshift z to be converted to an equivalent measurement in the rest frame of the object.
New!!: Redshift and K correction · See more »
Kinetic theory of gases
The kinetic theory describes a gas as a large number of submicroscopic particles (atoms or molecules), all of which are in constant rapid motion that has randomness arising from their many collisions with each other and with the walls of the container.
New!!: Redshift and Kinetic theory of gases · See more »
Laboratory
A laboratory (informally, lab) is a facility that provides controlled conditions in which scientific or technological research, experiments, and measurement may be performed.
New!!: Redshift and Laboratory · See more »
Lambda-CDM model
The ΛCDM (Lambda cold dark matter) or Lambda-CDM model is a parametrization of the Big Bang cosmological model in which the universe contains a cosmological constant, denoted by Lambda (Greek Λ), associated with dark energy, and cold dark matter (abbreviated CDM).
New!!: Redshift and Lambda-CDM model · See more »
Life
Life is a characteristic that distinguishes physical entities that do have biological processes, such as signaling and self-sustaining processes, from those that do not, either because such functions have ceased, or because they never had such functions and are classified as inanimate.
New!!: Redshift and Life · See more »
Light
Light is electromagnetic radiation within a certain portion of the electromagnetic spectrum.
New!!: Redshift and Light · See more »
Light intensity
Several measures of light are commonly known as intensity.
New!!: Redshift and Light intensity · See more »
Light-year
The light-year is a unit of length used to express astronomical distances and measures about 9.5 trillion kilometres or 5.9 trillion miles.
New!!: Redshift and Light-year · See more »
Line-of-sight propagation
Line-of-sight propagation is a characteristic of electromagnetic radiation or acoustic wave propagation which means waves travel in a direct path from the source to the receiver.
New!!: Redshift and Line-of-sight propagation · See more »
Local Group
The Local Group is the galaxy group that includes the Milky Way.
New!!: Redshift and Local Group · See more »
Local reference frame
In theoretical physics, a local reference frame (local frame) refers to a coordinate system or frame of reference that is only expected to function over a small region or a restricted region of space or spacetime.
New!!: Redshift and Local reference frame · See more »
Lorentz covariance
In relativistic physics, Lorentz symmetry, named for Hendrik Lorentz, is an equivalence of observation or observational symmetry due to special relativity implying that the laws of physics stay the same for all observers that are moving with respect to one another within an inertial frame.
New!!: Redshift and Lorentz covariance · See more »
Lorentz factor
The Lorentz factor or Lorentz term is the factor by which time, length, and relativistic mass change for an object while that object is moving.
New!!: Redshift and Lorentz factor · See more »
Lowell Observatory
Lowell Observatory is an astronomical observatory in Flagstaff, Arizona, United States.
New!!: Redshift and Lowell Observatory · See more »
Luminosity
In astronomy, luminosity is the total amount of energy emitted per unit of time by a star, galaxy, or other astronomical object.
New!!: Redshift and Luminosity · See more »
Lyman-break galaxy
Lyman-break galaxies are star-forming galaxies at high redshift that are selected using the differing appearance of the galaxy in several imaging filters due to the position of the Lyman limit.
New!!: Redshift and Lyman-break galaxy · See more »
MacTutor History of Mathematics archive
The MacTutor History of Mathematics archive is a website maintained by John J. O'Connor and Edmund F. Robertson and hosted by the University of St Andrews in Scotland.
New!!: Redshift and MacTutor History of Mathematics archive · See more »
Magnitude (mathematics)
In mathematics, magnitude is the size of a mathematical object, a property which determines whether the object is larger or smaller than other objects of the same kind.
New!!: Redshift and Magnitude (mathematics) · See more »
Mass
Mass is both a property of a physical body and a measure of its resistance to acceleration (a change in its state of motion) when a net force is applied.
New!!: Redshift and Mass · See more »
Mass-to-light ratio
In astrophysics and physical cosmology the mass to light ratio, normally designated with the Greek upsilon symbol \Upsilon, is the quotient between the total mass of a spatial volume (typically on the scales of a galaxy or a cluster) and its luminosity.
New!!: Redshift and Mass-to-light ratio · See more »
Matter
In the classical physics observed in everyday life, matter is any substance that has mass and takes up space by having volume.
New!!: Redshift and Matter · See more »
Mössbauer effect
The Mössbauer effect, or recoilless nuclear resonance fluorescence, is a physical phenomenon discovered by Rudolf Mössbauer in 1958.
New!!: Redshift and Mössbauer effect · See more »
Methods of detecting exoplanets
Any planet is an extremely faint light source compared to its parent star.
New!!: Redshift and Methods of detecting exoplanets · See more »
Metre per second
Metre per second (American English: meter per second) is an SI derived unit of both speed (scalar) and velocity (vector quantity which specifies both magnitude and a specific direction), defined by distance in metres divided by time in seconds.
New!!: Redshift and Metre per second · See more »
Metric (mathematics)
In mathematics, a metric or distance function is a function that defines a distance between each pair of elements of a set.
New!!: Redshift and Metric (mathematics) · See more »
Metric tensor
In the mathematical field of differential geometry, a metric tensor is a type of function which takes as input a pair of tangent vectors and at a point of a surface (or higher dimensional differentiable manifold) and produces a real number scalar in a way that generalizes many of the familiar properties of the dot product of vectors in Euclidean space.
New!!: Redshift and Metric tensor · See more »
Milky Way
The Milky Way is the galaxy that contains our Solar System.
New!!: Redshift and Milky Way · See more »
Minkowski space
In mathematical physics, Minkowski space (or Minkowski spacetime) is a combining of three-dimensional Euclidean space and time into a four-dimensional manifold where the spacetime interval between any two events is independent of the inertial frame of reference in which they are recorded.
New!!: Redshift and Minkowski space · See more »
Monotonic function
In mathematics, a monotonic function (or monotone function) is a function between ordered sets that preserves or reverses the given order.
New!!: Redshift and Monotonic function · See more »
Monthly Notices of the Royal Astronomical Society
Monthly Notices of the Royal Astronomical Society (MNRAS) is a peer-reviewed scientific journal covering research in astronomy and astrophysics.
New!!: Redshift and Monthly Notices of the Royal Astronomical Society · See more »
Motion (physics)
In physics, motion is a change in position of an object over time.
New!!: Redshift and Motion (physics) · See more »
NASA
The National Aeronautics and Space Administration (NASA) is an independent agency of the executive branch of the United States federal government responsible for the civilian space program, as well as aeronautics and aerospace research.
New!!: Redshift and NASA · See more »
Nature (journal)
Nature is a British multidisciplinary scientific journal, first published on 4 November 1869.
New!!: Redshift and Nature (journal) · See more »
Neil Gehrels Swift Observatory
The Neil Gehrels Swift Observatory, previously called the Swift Gamma-Ray Burst Mission, is a NASA space telescope designed to detect gamma-ray bursts (GRBs).
New!!: Redshift and Neil Gehrels Swift Observatory · See more »
Netherlands
The Netherlands (Nederland), often referred to as Holland, is a country located mostly in Western Europe with a population of seventeen million.
New!!: Redshift and Netherlands · See more »
Neutron star
A neutron star is the collapsed core of a large star which before collapse had a total of between 10 and 29 solar masses.
New!!: Redshift and Neutron star · See more »
Non-standard cosmology
A non-standard cosmology is any physical cosmological model of the universe that was, or still is, proposed as an alternative to the then-current standard model of cosmology.
New!!: Redshift and Non-standard cosmology · See more »
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.
New!!: Redshift and Observable universe · See more »
Observational error
Observational error (or measurement error) is the difference between a measured value of a quantity and its true value.
New!!: Redshift and Observational error · See more »
Optical filter
An optical filter is a device that selectively transmits light of different wavelengths, usually implemented as a glass plane or plastic device in the optical path, which are either dyed in the bulk or have interference coatings.
New!!: Redshift and Optical filter · See more »
Orange (colour)
Orange is the colour between yellow and red on the spectrum of visible light.
New!!: Redshift and Orange (colour) · See more »
Orbit
In physics, an orbit is the gravitationally curved trajectory of an object, such as the trajectory of a planet around a star or a natural satellite around a planet.
New!!: Redshift and Orbit · See more »
Parsec
The parsec (symbol: pc) is a unit of length used to measure large distances to astronomical objects outside the Solar System.
New!!: Redshift and Parsec · See more »
Peculiar velocity
Peculiar motion or peculiar velocity refers to the velocity of an object relative to a rest frame — usually a frame in which the average velocity of some objects is zero.
New!!: Redshift and Peculiar velocity · See more »
Philosophical Transactions of the Royal Society
Philosophical Transactions, titled Philosophical Transactions of the Royal Society (often abbreviated as Phil. Trans.) from 1776, is a scientific journal published by the Royal Society.
New!!: Redshift and Philosophical Transactions of the Royal Society · See more »
Photometric redshift
A photometric redshift is an estimate for the recession velocity of an astronomical object, such as a galaxy or quasar, without measuring its spectrum.
New!!: Redshift and Photometric redshift · See more »
Photometry (astronomy)
Photometry is a technique of astronomy concerned with measuring the flux, or intensity of an astronomical object's electromagnetic radiation.
New!!: Redshift and Photometry (astronomy) · See more »
Photon energy
Photon energy is the energy carried by a single photon.
New!!: Redshift and Photon energy · See more »
Photosphere
The photosphere is a star's outer shell from which light is radiated.
New!!: Redshift and Photosphere · See more »
Physical optics
In physics, physical optics, or wave optics, is the branch of optics that studies interference, diffraction, polarization, and other phenomena for which the ray approximation of geometric optics is not valid.
New!!: Redshift and Physical optics · See more »
Physics
Physics (from knowledge of nature, from φύσις phýsis "nature") is the natural science that studies matterAt the start of The Feynman Lectures on Physics, Richard Feynman offers the atomic hypothesis as the single most prolific scientific concept: "If, in some cataclysm, all scientific knowledge were to be destroyed one sentence what statement would contain the most information in the fewest words? I believe it is that all things are made up of atoms – little particles that move around in perpetual motion, attracting each other when they are a little distance apart, but repelling upon being squeezed into one another..." and its motion and behavior through space and time and that studies the related entities of energy and force."Physical science is that department of knowledge which relates to the order of nature, or, in other words, to the regular succession of events." Physics is one of the most fundamental scientific disciplines, and its main goal is to understand how the universe behaves."Physics is one of the most fundamental of the sciences. Scientists of all disciplines use the ideas of physics, including chemists who study the structure of molecules, paleontologists who try to reconstruct how dinosaurs walked, and climatologists who study how human activities affect the atmosphere and oceans. Physics is also the foundation of all engineering and technology. No engineer could design a flat-screen TV, an interplanetary spacecraft, or even a better mousetrap without first understanding the basic laws of physics. (...) You will come to see physics as a towering achievement of the human intellect in its quest to understand our world and ourselves."Physics is an experimental science. Physicists observe the phenomena of nature and try to find patterns that relate these phenomena.""Physics is the study of your world and the world and universe around you." Physics is one of the oldest academic disciplines and, through its inclusion of astronomy, perhaps the oldest. Over the last two millennia, physics, chemistry, biology, and certain branches of mathematics were a part of natural philosophy, but during the scientific revolution in the 17th century, these natural sciences emerged as unique research endeavors in their own right. Physics intersects with many interdisciplinary areas of research, such as biophysics and quantum chemistry, and the boundaries of physics are not rigidly defined. New ideas in physics often explain the fundamental mechanisms studied by other sciences and suggest new avenues of research in academic disciplines such as mathematics and philosophy. Advances in physics often enable advances in new technologies. For example, advances in the understanding of electromagnetism and nuclear physics led directly to the development of new products that have dramatically transformed modern-day society, such as television, computers, domestic appliances, and nuclear weapons; advances in thermodynamics led to the development of industrialization; and advances in mechanics inspired the development of calculus.
New!!: Redshift and Physics · See more »
Pitch (music)
Pitch is a perceptual property of sounds that allows their ordering on a frequency-related scale, or more commonly, pitch is the quality that makes it possible to judge sounds as "higher" and "lower" in the sense associated with musical melodies.
New!!: Redshift and Pitch (music) · See more »
Planet
A planet is an astronomical body orbiting a star or stellar remnant that is massive enough to be rounded by its own gravity, is not massive enough to cause thermonuclear fusion, and has cleared its neighbouring region of planetesimals.
New!!: Redshift and Planet · See more »
Popular Astronomy (US magazine)
Popular Astronomy is an American magazine published by John August Media, LLC and hosted at TechnicaCuriosa.com for amateur astronomers.
New!!: Redshift and Popular Astronomy (US magazine) · See more »
Pound–Rebka experiment
The Pound–Rebka experiment is a well known experiment to test Albert Einstein's theory of general relativity.
New!!: Redshift and Pound–Rebka experiment · See more »
Proceedings of the National Academy of Sciences of the United States of America
Proceedings of the National Academy of Sciences of the United States of America (PNAS) is the official scientific journal of the National Academy of Sciences, published since 1915.
New!!: Redshift and Proceedings of the National Academy of Sciences of the United States of America · See more »
Quasar
A quasar (also known as a QSO or quasi-stellar object) is an extremely luminous active galactic nucleus (AGN).
New!!: Redshift and Quasar · See more »
Radar gun
A radar speed gun (also radar gun and speed gun) is a device used to measure the speed of moving objects.
New!!: Redshift and Radar gun · See more »
Radiative transfer
Radiative transfer is the physical phenomenon of energy transfer in the form of electromagnetic radiation.
New!!: Redshift and Radiative transfer · See more »
Randomness
Randomness is the lack of pattern or predictability in events.
New!!: Redshift and Randomness · See more »
Rayleigh scattering
Rayleigh scattering (pronounced), named after the British physicist Lord Rayleigh (John William Strutt), is the (dominantly) elastic scattering of light or other electromagnetic radiation by particles much smaller than the wavelength of the radiation.
New!!: Redshift and Rayleigh scattering · See more »
Recessional velocity
Recessional velocity is the rate at which an astronomical object is moving away, typically from Earth.
New!!: Redshift and Recessional velocity · See more »
Redshift-space distortions
Redshift-space distortions are an effect in observational cosmology where the spatial distribution of galaxies appears squashed and distorted when their positions are plotted in redshift-space (i.e. as a function of their redshift) rather than in real-space (as a function of their actual distance).
New!!: Redshift and Redshift-space distortions · See more »
Refractive index
In optics, the refractive index or index of refraction of a material is a dimensionless number that describes how light propagates through that medium.
New!!: Redshift and Refractive index · See more »
Relativistic Doppler effect
The relativistic Doppler effect is the change in frequency (and wavelength) of light, caused by the relative motion of the source and the observer (as in the classical Doppler effect), when taking into account effects described by the special theory of relativity.
New!!: Redshift and Relativistic Doppler effect · See more »
Right angle
In geometry and trigonometry, a right angle is an angle of exactly 90° (degrees), corresponding to a quarter turn.
New!!: Redshift and Right angle · See more »
Rossiter–McLaughlin effect
The Rossiter–McLaughlin effect is a spectroscopic phenomenon observed when either an eclipsing binary's secondary star or an extrasolar planet is seen to transit across the face of the primary or parent star.
New!!: Redshift and Rossiter–McLaughlin effect · See more »
Rotation
A rotation is a circular movement of an object around a center (or point) of rotation.
New!!: Redshift and Rotation · See more »
Sachs–Wolfe effect
The Sachs–Wolfe effect, named after Rainer K. Sachs and Arthur M. Wolfe, is a property of the cosmic microwave background radiation (CMB), in which photons from the CMB are gravitationally redshifted, causing the CMB spectrum to appear uneven.
New!!: Redshift and Sachs–Wolfe effect · See more »
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.
New!!: Redshift and Scale factor (cosmology) · See more »
Scattering
Scattering is a general physical process where some forms of radiation, such as light, sound, or moving particles, are forced to deviate from a straight trajectory by one or more paths due to localized non-uniformities in the medium through which they pass.
New!!: Redshift and Scattering · See more »
Schwarzschild coordinates
In the theory of Lorentzian manifolds, spherically symmetric spacetimes admit a family of nested round spheres.
New!!: Redshift and Schwarzschild coordinates · See more »
Schwarzschild metric
In Einstein's theory of general relativity, the Schwarzschild metric (also known as the Schwarzschild vacuum or Schwarzschild solution) is the solution to the Einstein field equations that describes the gravitational field outside a spherical mass, on the assumption that the electric charge of the mass, angular momentum of the mass, and universal cosmological constant are all zero.
New!!: Redshift and Schwarzschild metric · See more »
Scientific American
Scientific American (informally abbreviated SciAm) is an American popular science magazine.
New!!: Redshift and Scientific American · See more »
Sloan Digital Sky Survey
The Sloan Digital Sky Survey or SDSS is a major multi-spectral imaging and spectroscopic redshift survey using a dedicated 2.5-m wide-angle optical telescope at Apache Point Observatory in New Mexico, United States.
New!!: Redshift and Sloan Digital Sky Survey · See more »
Sound
In physics, sound is a vibration that typically propagates as an audible wave of pressure, through a transmission medium such as a gas, liquid or solid.
New!!: Redshift and Sound · See more »
Space telescope
A space telescope or space observatory is an instrument located in outer space to observe distant planets, galaxies and other astronomical objects.
New!!: Redshift and Space telescope · See more »
Spacetime
In physics, spacetime is any mathematical model that fuses the three dimensions of space and the one dimension of time into a single four-dimensional continuum.
New!!: Redshift and Spacetime · See more »
Spacetime topology
Spacetime topology is the topological structure of spacetime, a topic studied primarily in general relativity.
New!!: Redshift and Spacetime topology · See more »
Special relativity
In physics, special relativity (SR, also known as the special theory of relativity or STR) is the generally accepted and experimentally well-confirmed physical theory regarding the relationship between space and time.
New!!: Redshift and Special relativity · See more »
Spectral line
A spectral line is a dark or bright line in an otherwise uniform and continuous spectrum, resulting from emission or absorption of light in a narrow frequency range, compared with the nearby frequencies.
New!!: Redshift and Spectral line · See more »
Spectrograph
A spectrograph is an instrument that separates light into a frequency spectrum and records the signal using a camera.
New!!: Redshift and Spectrograph · See more »
Spectroscopy
Spectroscopy is the study of the interaction between matter and electromagnetic radiation.
New!!: Redshift and Spectroscopy · See more »
Speed of light
The speed of light in vacuum, commonly denoted, is a universal physical constant important in many areas of physics.
New!!: Redshift and Speed of light · See more »
Spiral galaxy
Spiral galaxies form a class of galaxy originally described by Edwin Hubble in his 1936 work The Realm of the Nebulae(pp. 124–151) and, as such, form part of the Hubble sequence.
New!!: Redshift and Spiral galaxy · See more »
Star
A star is type of astronomical object consisting of a luminous spheroid of plasma held together by its own gravity.
New!!: Redshift and Star · See more »
Stationary spacetime
In general relativity, specifically in the Einstein field equations, a spacetime is said to be stationary if it admits a Killing vector that is asymptotically timelike.
New!!: Redshift and Stationary spacetime · See more »
Stellar population
During 1944, Walter Baade categorized groups of stars within the Milky Way into bluer stars associated with the spiral arms and the general position of yellow stars near the central galactic bulge or within globular star clusters.
New!!: Redshift and Stellar population · See more »
Steven Weinberg
Steven Weinberg (born May 3, 1933) is an American theoretical physicist and Nobel laureate in Physics for his contributions with Abdus Salam and Sheldon Glashow to the unification of the weak force and electromagnetic interaction between elementary particles.
New!!: Redshift and Steven Weinberg · See more »
Sun
The Sun is the star at the center of the Solar System.
New!!: Redshift and Sun · See more »
Supercluster
A supercluster is a large group of smaller galaxy clusters or galaxy groups; it is among the largest-known structures of the cosmos.
New!!: Redshift and Supercluster · See more »
Telescope
A telescope is an optical instrument that aids in the observation of remote objects by collecting electromagnetic radiation (such as visible light).
New!!: Redshift and Telescope · See more »
Temperature
Temperature is a physical quantity expressing hot and cold.
New!!: Redshift and Temperature · See more »
The Astrophysical Journal
The Astrophysical Journal, often abbreviated ApJ (pronounced "ap jay") in references and speech, is a peer-reviewed scientific journal of astrophysics and astronomy, established in 1895 by American astronomers George Ellery Hale and James Edward Keeler.
New!!: Redshift and The Astrophysical Journal · See more »
The Feynman Lectures on Physics
The Feynman Lectures on Physics is a physics textbook based on some lectures by Richard P. Feynman, a Nobel laureate who has sometimes been called "The Great Explainer".
New!!: Redshift and The Feynman Lectures on Physics · See more »
The First Three Minutes
The First Three Minutes: A Modern View of the Origin of the Universe (1977; second edition 1993) is a book by American physicist Steven Weinberg.
New!!: Redshift and The First Three Minutes · See more »
The New York Times
The New York Times (sometimes abbreviated as The NYT or The Times) is an American newspaper based in New York City with worldwide influence and readership.
New!!: Redshift and The New York Times · See more »
Time dilation
According to the theory of relativity, time dilation is a difference in the elapsed time measured by two observers, either due to a velocity difference relative to each other, or by being differently situated relative to a gravitational field.
New!!: Redshift and Time dilation · See more »
Tired light
Tired light is a class of hypothetical redshift mechanisms that was proposed as an alternative explanation for the redshift-distance relationship.
New!!: Redshift and Tired light · See more »
Type Ia supernova
A type Ia supernova (read "type one-a") is a type of supernova that occurs in binary systems (two stars orbiting one another) in which one of the stars is a white dwarf.
New!!: Redshift and Type Ia supernova · See more »
UDFy-38135539
UDFy-38135539 (also known as "HUDF.YD3") is the Hubble Ultra Deep Field (UDF) identifier for a galaxy which was calculated to have a light travel time of 13.1 billion years with a present proper distance of around 30 billion light-years.
New!!: Redshift and UDFy-38135539 · See more »
ULAS J1342+0928
ULAS J1342+0928 is the most distant known quasar detected and contains the most distant and oldest known supermassive black hole, at a reported redshift of z.
New!!: Redshift and ULAS J1342+0928 · See more »
Universe
The Universe is all of space and time and their contents, including planets, stars, galaxies, and all other forms of matter and energy.
New!!: Redshift and Universe · See more »
University of Nottingham
The University of Nottingham is a public research university in Nottingham, United Kingdom.
New!!: Redshift and University of Nottingham · See more »
University of St Andrews
The University of St Andrews (informally known as St Andrews University or simply St Andrews; abbreviated as St And, from the Latin Sancti Andreae, in post-nominals) is a British public research university in St Andrews, Fife, Scotland.
New!!: Redshift and University of St Andrews · See more »
Variance
In probability theory and statistics, variance is the expectation of the squared deviation of a random variable from its mean.
New!!: Redshift and Variance · See more »
Vector projection
The vector projection of a vector a on (or onto) a nonzero vector b (also known as the vector component or vector resolution of a in the direction of b) is the orthogonal projection of a onto a straight line parallel to b. It is a vector parallel to b, defined as where a_1 is a scalar, called the scalar projection of a onto b, and b̂ is the unit vector in the direction of b. In turn, the scalar projection is defined as where the operator · denotes a dot product, |a| is the length of a, and θ is the angle between a and b. The scalar projection is equal to the length of the vector projection, with a minus sign if the direction of the projection is opposite to the direction of b. The vector component or vector resolute of a perpendicular to b, sometimes also called the vector rejection of a from b, is the orthogonal projection of a onto the plane (or, in general, hyperplane) orthogonal to b. Both the projection a1 and rejection a2 of a vector a are vectors, and their sum is equal to a, which implies that the rejection is given by.
New!!: Redshift and Vector projection · See more »
Velocity
The velocity of an object is the rate of change of its position with respect to a frame of reference, and is a function of time.
New!!: Redshift and Velocity · See more »
Venus
Venus is the second planet from the Sun, orbiting it every 224.7 Earth days.
New!!: Redshift and Venus · See more »
Vesto Slipher
Vesto Melvin Slipher (November 11, 1875 – November 8, 1969) was an American astronomer who performed the first measurements of radial velocities for galaxies, providing the empirical basis for the expansion of the universe.
New!!: Redshift and Vesto Slipher · See more »
Virgo Cluster
The Virgo Cluster is a cluster of galaxies whose center is 53.8 ± 0.3 Mly (16.5 ± 0.1 Mpc) away in the constellation Virgo.
New!!: Redshift and Virgo Cluster · See more »
Virial theorem
In mechanics, the virial theorem provides a general equation that relates the average over time of the total kinetic energy, \left\langle T \right\rangle, of a stable system consisting of N particles, bound by potential forces, with that of the total potential energy, \left\langle V_\text \right\rangle, where angle brackets represent the average over time of the enclosed quantity.
New!!: Redshift and Virial theorem · See more »
Visible spectrum
The visible spectrum is the portion of the electromagnetic spectrum that is visible to the human eye.
New!!: Redshift and Visible spectrum · See more »
W. M. Keck Observatory
The W. M. Keck Observatory is a two-telescope astronomical observatory at an elevation of 4,145 meters (13,600 ft) near the summit of Mauna Kea in the U.S. state of Hawaii.
New!!: Redshift and W. M. Keck Observatory · See more »
Walter Sydney Adams
Walter Sydney Adams (December 20, 1876 – May 11, 1956) was an American astronomer.
New!!: Redshift and Walter Sydney Adams · See more »
Wave
In physics, a wave is a disturbance that transfers energy through matter or space, with little or no associated mass transport.
New!!: Redshift and Wave · See more »
Wavelength
In physics, the wavelength is the spatial period of a periodic wave—the distance over which the wave's shape repeats.
New!!: Redshift and Wavelength · See more »
Whistler (radio)
A whistler is a very low frequency or VLF electromagnetic (radio) wave generated by lightning.
New!!: Redshift and Whistler (radio) · See more »
White noise
In signal processing, white noise is a random signal having equal intensity at different frequencies, giving it a constant power spectral density.
New!!: Redshift and White noise · See more »
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.
New!!: Redshift and Wilkinson Microwave Anisotropy Probe · See more »
Willem de Sitter
Willem de Sitter (6 May 1872 – 20 November 1934) was a Dutch mathematician, physicist, and astronomer.
New!!: Redshift and Willem de Sitter · See more »
William Huggins
Sir William Huggins (7 February 1824 – 12 May 1910) was an English astronomer best known for his pioneering work in astronomical spectroscopy together with his wife Margaret Lindsay Huggins.
New!!: Redshift and William Huggins · See more »
Wolf effect
The Wolf Effect (sometimes Wolf shift) is a frequency shift in the electromagnetic spectrum.
New!!: Redshift and Wolf effect · See more »
Zeitschrift für Physik
Zeitschrift für Physik (English: Journal for physics) is a defunct series of German peer-reviewed German scientific journal of physics established in 1920 by Springer Berlin Heidelberg.
New!!: Redshift and Zeitschrift für Physik · See more »
2dF Galaxy Redshift Survey
In astronomy, the 2dF Galaxy Redshift Survey (Two-degree-Field Galaxy Redshift Survey), 2dF or 2dFGRS is a redshift survey conducted by the Anglo-Australian Observatory (AAO) with the 3.9m Anglo-Australian Telescope between 1997 and 11 April 2002.
New!!: Redshift and 2dF Galaxy Redshift Survey · See more »
Redirects here:
Cosmic redshift, Distance Redshift, Doppler redshift, Doppler-like redshifts, Galactic redshift, Galactic redshifts, Red Shift, Red shift, Red shift light, Red-shift, Redshifted, Redshifts, Relativistic Redshift, Spectral shift, Spectroscope redshift, Spectroscopic redshift.
References
[1] https://en.wikipedia.org/wiki/Redshift
