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120 relations: Active galactic nucleus, American Astronomical Society, Arecibo Observatory, Astronomical Society of the Pacific, Astronomical spectroscopy, Astronomy, Astronomy & Astrophysics, Astrophysics and Space Science, Billion, Chandra, Chris Lintott, Citizen science, Color–color diagram, Conversation threading, Cosmic Origins Spectrograph, Density, Diagnosis, Doubly ionized oxygen, Dwarf galaxy, Dynamo theory, Empirical evidence, Equivalent width, Erg, Extinction (astronomy), Flux, Forbidden mechanism, Galaxy, Galaxy formation and evolution, Galaxy merger, Galaxy morphological classification, Galaxy Zoo, GALEX, Gauss (unit), Giant Metrewave Radio Telescope, Give Peace a Chance, Gran Telescopio Canarias, Green bean galaxy, Guillermo Haro, Haro 11, Harvard–Smithsonian Center for Astrophysics, Hubble Space Telescope, Hydrogen spectral series, Internet forum, Interstellar medium, Ionization, IRAS, Jansky, John Lennon, Kevin Schawinski, List of galaxies, ..., Low-surface-brightness galaxy, Luminosity, Lyman continuum photons, Lyman-alpha emitter, Lyman-alpha line, Lyman-break galaxy, Magellan Telescopes, Magnesium, Magnetic field, Magnetism, Metallicity, Methodology, Milky Way, Minute and second of arc, Monthly Notices of the Royal Astronomical Society, Nanometre, NASA, NASA/IPAC Extragalactic Database, Nature (journal), Nebula, Nitrogen, NRAO VLA Sky Survey, Open access, Optical depth, Optical filter, Optical System for Imaging and low Resolution Integrated Spectroscopy, Oxygen, Peace Corps, Photoionization, Photon, Princeton University Press, Publications of the Astronomical Society of the Pacific, Quasar, Radio spectrum, Redshift, Reinventing Discovery, Reionization, Roque de los Muchachos Observatory, Signal-to-noise ratio, Sloan Digital Sky Survey, Space Science Reviews, Space Telescope Science Institute, Spectral line, Spectroscopy, Spiral galaxy, SQL, Star formation, Starburst galaxy, Steven Hawley, Supernova, Synchrotron radiation, The Astronomical Journal, The Astrophysical Journal, Tololo 1247-232, Ultraviolet, Ultraviolet astronomy, Universe, University of Michigan, Very Large Array, Visible spectrum, Watt, Wavelength, Web portal, Wide-field Infrared Survey Explorer, William Herschel Telescope, Wolf–Rayet star, Word play, Yale University, Zooniverse, 2MASS. Expand index (70 more) »
Active galactic nucleus
An active galactic nucleus (AGN) is a compact region at the center of a galaxy that has a much higher than normal luminosity over at least some portion—and possibly all—of the electromagnetic spectrum, with characteristics indicating that the excess luminosity is not produced by stars.
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American Astronomical Society
The American Astronomical Society (AAS, sometimes spoken as "double-A-S") is an American society of professional astronomers and other interested individuals, headquartered in Washington, DC.
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Arecibo Observatory
The Arecibo Observatory is a radio telescope in the municipality of Arecibo, Puerto Rico.
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Astronomical Society of the Pacific
The Astronomical Society of the Pacific (ASP) is an American scientific and educational organization, founded in San Francisco on February 7, 1889.
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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.
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Astronomy
Astronomy (from ἀστρονομία) is a natural science that studies celestial objects and phenomena.
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Astronomy & Astrophysics
Astronomy & Astrophysics is a peer-reviewed scientific journal covering theoretical, observational, and instrumental astronomy and astrophysics.
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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.
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Billion
A billion is a number with two distinct definitions.
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Chandra
Chandra (चन्द्र, IAST: Candra, lit. "shining" or "moon")Graha Sutras By Ernst Wilhelm, Published by Kala Occult Publishers p.51 is a lunar deity and is also one of the nine planets (Navagraha) in Hinduism.
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Chris Lintott
Christopher John Lintott (born 26 November 1980) is a Professor of Astrophysics in the Department of Physics at the University of Oxford.
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Citizen science
Citizen science (CS; also known as community science, crowd science, crowd-sourced science, civic science, volunteer monitoring, or networked science) is scientific research conducted, in whole or in part, by amateur (or nonprofessional) scientists.
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Color–color diagram
In astronomy, color–color diagrams are a means of comparing the apparent magnitudes of stars at different wavelengths.
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Conversation threading
Conversation threading is a feature used by many email clients, bulletin boards, newsgroups, and Internet forums in which the software aids the user by visually grouping messages with their replies.
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Cosmic Origins Spectrograph
The Cosmic Origins Spectrograph (COS) is a science instrument that was installed on the Hubble Space Telescope during Servicing Mission 4 (STS-125) in May 2009.
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Density
The density, or more precisely, the volumetric mass density, of a substance is its mass per unit volume.
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Diagnosis
Diagnosis is the identification of the nature and cause of a certain phenomenon.
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Doubly ionized oxygen
In astronomy and atomic physics, doubly ionized oxygen is the ion O2+ (also known as O III in spectroscopic notation).
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Dwarf galaxy
A dwarf galaxy is a small galaxy composed of about 100 million up to several billion stars, a small number compared to the Milky Way's 200–400 billion stars.
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Dynamo theory
In physics, the dynamo theory proposes a mechanism by which a celestial body such as Earth or a star generates a magnetic field.
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Empirical evidence
Empirical evidence, also known as sensory experience, is the information received by means of the senses, particularly by observation and documentation of patterns and behavior through experimentation.
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Equivalent width
The equivalent width of a spectral line is a measure of the area of the line on a plot of intensity versus wavelength.
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Erg
The erg is a unit of energy and work equal to 10−7 joules.
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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.
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Flux
Flux describes the quantity which passes through a surface or substance.
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Forbidden mechanism
In spectroscopy, a forbidden mechanism (forbidden transition or forbidden line) is a spectral line associated with absorption or emission of light by atomic nuclei, atoms, or molecules which undergo a transition that is not allowed by a particular selection rule but is allowed if the approximation associated with that rule is not made.
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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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Galaxy formation and evolution
The study of galaxy formation and evolution is concerned with the processes that formed a heterogeneous universe from a homogeneous beginning, the formation of the first galaxies, the way galaxies change over time, and the processes that have generated the variety of structures observed in nearby galaxies.
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Galaxy merger
Galaxy mergers can occur when two (or more) galaxies collide.
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Galaxy morphological classification
Galaxy morphological classification is a system used by astronomers to divide galaxies into groups based on their visual appearance.
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Galaxy Zoo
Galaxy Zoo is a crowdsourced astronomy project which invites people to assist in the morphological classification of large numbers of galaxies.
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GALEX
The Galaxy Evolution Explorer (GALEX) is an orbiting ultraviolet space telescope launched on April 28, 2003, and operated until early 2012.
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Gauss (unit)
The gauss, abbreviated as G or Gs, is the cgs unit of measurement of magnetic flux density (or "magnetic induction") (B).
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Giant Metrewave Radio Telescope
The Giant Metrewave Radio Telescope (GMRT), located near Pune in India, is an array of thirty fully steerable parabolic radio telescopes of 45 metre diameter, observing at metre wavelengths.
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Give Peace a Chance
"Give Peace a Chance" is an anti-war song written by John Lennon (credited to Lennon–McCartney), and performed with Yoko Ono in Montreal, Quebec, Canada.
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Gran Telescopio Canarias
The Gran Telescopio Canarias (GranTeCan or GTC) is a reflecting telescope located at the Roque de los Muchachos Observatory on the island of La Palma, in the Canaries, Spain.
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Green bean galaxy
Green bean galaxies (GBGs) are very rare astronomical objects that are thought to be quasar ionization echos.
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Guillermo Haro
Guillermo Haro Barraza (21 March 1913 – 26 April 1988) was a Mexican astronomer.
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Haro 11
Haro 11 (H11) is a small galaxy at a distance of (redshift z.
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Harvard–Smithsonian Center for Astrophysics
The Harvard–Smithsonian Center for Astrophysics (CfA) is a research institute which carries out a broad program of research in astronomy, astrophysics, earth and space sciences, and science education.
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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.
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Hydrogen spectral series
The emission spectrum of atomic hydrogen is divided into a number of spectral series, with wavelengths given by the Rydberg formula.
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Internet forum
An Internet forum, or message board, is an online discussion site where people can hold conversations in the form of posted messages.
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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.
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Ionization
Ionization or ionisation, is the process by which an atom or a molecule acquires a negative or positive charge by gaining or losing electrons to form ions, often in conjunction with other chemical changes.
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IRAS
The Infrared Astronomical Satellite (IRAS) was the first-ever space telescope to perform a survey of the entire night sky at infrared wavelengths.
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Jansky
The jansky (symbol Jy) is a non-SI unit of spectral flux density, or spectral irradiance, used especially in radio astronomy.
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John Lennon
John Winston Ono Lennon (9 October 19408 December 1980) was an English singer, songwriter, and peace activist who co-founded the Beatles, the most commercially successful band in the history of popular music.
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Kevin Schawinski
Kevin Schawinski (April 28, 1981 in Zürich) is a Swiss astrophysicist.
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List of galaxies
The following is a list of notable galaxies.
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Low-surface-brightness galaxy
A low-surface-brightness galaxy, or LSB galaxy, is a diffuse galaxy with a surface brightness that, when viewed from Earth, is at least one magnitude lower than the ambient night sky.
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Luminosity
In astronomy, luminosity is the total amount of energy emitted per unit of time by a star, galaxy, or other astronomical object.
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Lyman continuum photons
Lyman continuum photons (abbrev. LyC), shortened to Ly continuum photons or Lyc photon, are the photons emitted from stars at photon energies above the Lyman limit.
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Lyman-alpha emitter
A Lyman-alpha emitter (LAE) is a type of distant galaxy that emits Lyman-alpha radiation.
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Lyman-alpha line
the Lyman-alpha line In physics, the Lyman-alpha line, sometimes written as Ly-α line, is a spectral line of hydrogen, or more generally of one-electron ions, in the Lyman series, emitted when the electron falls from the n.
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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.
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Magellan Telescopes
The Magellan Telescopes are a pair of optical telescopes located at Las Campanas Observatory in Chile.
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Magnesium
Magnesium is a chemical element with symbol Mg and atomic number 12.
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Magnetic field
A magnetic field is a vector field that describes the magnetic influence of electrical currents and magnetized materials.
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Magnetism
Magnetism is a class of physical phenomena that are mediated by magnetic fields.
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Metallicity
In astronomy, metallicity is used to describe the abundance of elements present in an object that are heavier than hydrogen or helium.
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Methodology
Methodology is the systematic, theoretical analysis of the methods applied to a field of study.
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Milky Way
The Milky Way is the galaxy that contains our Solar System.
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Minute and second of arc
A minute of arc, arcminute (arcmin), arc minute, or minute arc is a unit of angular measurement equal to of one degree.
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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.
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Nanometre
The nanometre (International spelling as used by the International Bureau of Weights and Measures; SI symbol: nm) or nanometer (American spelling) is a unit of length in the metric system, equal to one billionth (short scale) of a metre (m).
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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.
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NASA/IPAC Extragalactic Database
The NASA/IPAC Extragalactic Database (NED) is an on-line astronomical database for astronomers that collates and cross-correlates astronomical information on extragalactic objects (galaxies, quasars, radio, x-ray and infrared sources, etc.). NED was created in the late 1980s by two Pasadena astronomers, George Helou and Barry F. Madore.
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Nature (journal)
Nature is a British multidisciplinary scientific journal, first published on 4 November 1869.
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Nebula
A nebula (Latin for "cloud" or "fog"; pl. nebulae, nebulæ, or nebulas) is an interstellar cloud of dust, hydrogen, helium and other ionized gases.
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Nitrogen
Nitrogen is a chemical element with symbol N and atomic number 7.
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NRAO VLA Sky Survey
The NRAO VLA Sky Survey (NVSS) was an astronomical survey of the Northern Hemisphere carried out by the Very Large Array (VLA) of the National Radio Astronomy Observatory (NRAO), resulting in an astronomical catalogue.
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Open access
Open access (OA) refers to research outputs which are distributed online and free of cost or other barriers, and possibly with the addition of a Creative Commons license to promote reuse.
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Optical depth
In physics, optical depth or optical thickness, is the natural logarithm of the ratio of incident to transmitted radiant power through a material, and spectral optical depth or spectral optical thickness is the natural logarithm of the ratio of incident to transmitted spectral radiant power through a material.
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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.
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Optical System for Imaging and low Resolution Integrated Spectroscopy
OSIRIS (Optical System for Imaging and low Resolution Integrated Spectroscopy) is the Spanish Day One instrument for the Gran Telescopio Canarias (GTC).
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Oxygen
Oxygen is a chemical element with symbol O and atomic number 8.
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Peace Corps
The Peace Corps is a volunteer program run by the United States government.
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Photoionization
Photoionization is the physical process in which an ion is formed from the interaction of a photon with an atom or molecule.
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Photon
The photon is a type of elementary particle, the quantum of the electromagnetic field including electromagnetic radiation such as light, and the force carrier for the electromagnetic force (even when static via virtual particles).
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Princeton University Press
Princeton University Press is an independent publisher with close connections to Princeton University.
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Publications of the Astronomical Society of the Pacific
Publications of the Astronomical Society of the Pacific (often abbreviated as PASP in references and literature) is a monthly peer-reviewed scientific journal managed by the Astronomical Society of the Pacific.
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Quasar
A quasar (also known as a QSO or quasi-stellar object) is an extremely luminous active galactic nucleus (AGN).
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Radio spectrum
The radio spectrum is the part of the electromagnetic spectrum with frequencies from 3 Hz to 3 000 GHz (3 THz).
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Redshift
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.
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Reinventing Discovery
Reinventing Discovery: The New Era of Networked Science is a book written by Michael Nielsen and released in October 2011.
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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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Roque de los Muchachos Observatory
Roque de los Muchachos Observatory (Spanish: Observatorio del Roque de los Muchachos, ORM) is an astronomical observatory located in the municipality of Garafía on the island of La Palma in the Canary Islands.
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Signal-to-noise ratio
Signal-to-noise ratio (abbreviated SNR or S/N) is a measure used in science and engineering that compares the level of a desired signal to the level of background noise.
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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.
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Space Science Reviews
Space Science Reviews is a peer reviewed, scientific journal of space science.
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Space Telescope Science Institute
The Space Telescope Science Institute (STScI) is the science operations center for the Hubble Space Telescope (HST; in orbit since 1990) and for the James Webb Space Telescope (JWST; scheduled to be launched in March 2021).
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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.
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Spectroscopy
Spectroscopy is the study of the interaction between matter and electromagnetic radiation.
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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.
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SQL
SQL (S-Q-L, "sequel"; Structured Query Language) is a domain-specific language used in programming and designed for managing data held in a relational database management system (RDBMS), or for stream processing in a relational data stream management system (RDSMS).
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Star formation
Star formation is the process by which dense regions within molecular clouds in interstellar space, sometimes referred to as "stellar nurseries" or "star-forming regions", collapse and form stars.
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Starburst galaxy
A starburst galaxy is a galaxy undergoing an exceptionally high rate of star formation, as compared to the long-term average rate of star formation in the galaxy or the star formation rate observed in most other galaxies.
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Steven Hawley
Steven Alan Hawley (born December 12, 1951) is a former NASA astronaut who flew on five U.S. Space Shuttle flights.
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Supernova
A supernova (plural: supernovae or supernovas, abbreviations: SN and SNe) is a transient astronomical event that occurs during the last stellar evolutionary stages of a star's life, either a massive star or a white dwarf, whose destruction is marked by one final, titanic explosion.
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Synchrotron radiation
Synchrotron radiation (also known as magnetobremsstrahlung radiation) is the electromagnetic radiation emitted when charged particles are accelerated radially, i.e., when they are subject to an acceleration perpendicular to their velocity.
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The Astronomical Journal
The Astronomical Journal (often abbreviated AJ in scientific papers and references) is a peer-reviewed monthly scientific journal owned by the American Astronomical Society and currently published by IOP Publishing.
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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.
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Tololo 1247-232
Tololo 1247-232 (Tol 1247 or T1247)) is a small galaxy at a distance of (redshift z.
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Ultraviolet
Ultraviolet (UV) is electromagnetic radiation with a wavelength from 10 nm to 400 nm, shorter than that of visible light but longer than X-rays.
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Ultraviolet astronomy
Ultraviolet astronomy is the observation of electromagnetic radiation at ultraviolet wavelengths between approximately 10 and 320 nanometres; shorter wavelengths—higher energy photons—are studied by X-ray astronomy and gamma ray astronomy.
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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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University of Michigan
The University of Michigan (UM, U-M, U of M, or UMich), often simply referred to as Michigan, is a public research university in Ann Arbor, Michigan.
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Very Large Array
The Karl G. Jansky Very Large Array (VLA) is a centimeter-wavelength radio astronomy observatory located in central New Mexico on the Plains of San Agustin, between the towns of Magdalena and Datil, ~50 miles (80 km) west of Socorro.
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Visible spectrum
The visible spectrum is the portion of the electromagnetic spectrum that is visible to the human eye.
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Watt
The watt (symbol: W) is a unit of power.
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Wavelength
In physics, the wavelength is the spatial period of a periodic wave—the distance over which the wave's shape repeats.
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Web portal
A web portal is a specially designed website that brings information from diverse sources, like emails, online forums and search engines, together in a uniform way.
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Wide-field Infrared Survey Explorer
Wide-field Infrared Survey Explorer (WISE) is a NASA infrared-wavelength astronomical space telescope launched in December 2009, and placed in hibernation in February 2011.
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William Herschel Telescope
The William Herschel Telescope (WHT) is a optical/near-infrared reflecting telescope located at the Observatorio del Roque de los Muchachos on the island of La Palma in the Canary Islands, Spain.
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Wolf–Rayet star
Wolf–Rayet stars, often abbreviated as WR stars, are a rare heterogeneous set of stars with unusual spectra showing prominent broad emission lines of highly ionised helium and nitrogen or carbon.
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Word play
Word play or wordplay (also: play-on-words) is a literary technique and a form of wit in which words used become the main subject of the work, primarily for the purpose of intended effect or amusement.
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Yale University
Yale University is an American private Ivy League research university in New Haven, Connecticut.
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Zooniverse
Zooniverse is a citizen science web portal owned and operated by the Citizen Science Alliance.
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2MASS
The Two Micron All-Sky Survey, or 2MASS, was an astronomical survey of the whole sky in the infrared spectrum and one of the most ambitious such projects.
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Redirects here:
Green Pea galaxy, Peas (Astronomy).
References
[1] https://en.wikipedia.org/wiki/Pea_galaxy
