Nebula, the Glossary
A nebula (cloud, fog;: nebulae, nebulæ, or nebulas) is a distinct luminescent part of interstellar medium, which can consist of ionized, neutral, or molecular hydrogen and also cosmic dust.[1]
Table of Contents
129 relations: Abd al-Rahman al-Sufi, Abell Catalog of Planetary Nebulae, Almagest, Andromeda Galaxy, Astronomical object, Astronomy & Geophysics, Astronomy in the medieval Islamic world, Asymptotic giant branch, Barnard Catalogue, Barnard's Loop, Boomerang Nebula, Brocchi's Cluster, Caldwell catalogue, Cape of Good Hope, Carina Nebula, Caroline Herschel, Cat's Eye Nebula, Charles Messier, Chinese astronomy, Christiaan Huygens, Comet, Constellation, Cosmic dust, Crab Nebula, Dark nebula, Eagle Nebula, Earth, Edmond Halley, Edwin Hubble, Electron, Emission nebula, Emission spectrum, Engraved Hourglass Nebula, Eskimo Nebula, European Southern Observatory, Fox Fur Nebula, Galaxy, Gas, Great Debate (astronomy), Gum catalog, H I region, H II region, Helix Nebula, Henry Norris Russell, Herbig–Haro object, Horsehead Nebula, Human eye, Hydrogen, IC 2391, Infrared, ... Expand index (79 more) »
- Interstellar media
Abd al-Rahman al-Sufi
ʿAbd al-Raḥmān al-Ṣūfī (عبدالرحمن الصوفی; 7 December 90325 May 986) was a Persian Muslim astronomer.
See Nebula and Abd al-Rahman al-Sufi
Abell Catalog of Planetary Nebulae
The Abell Catalog of Planetary Nebulae was created in 1966 by George O. Abell and was composed of 86 entries thought to be planetary nebulae that were collected from discoveries, about half by Albert George Wilson and the rest by Abell, Robert George Harrington, and Rudolph Minkowski.
See Nebula and Abell Catalog of Planetary Nebulae
Almagest
The Almagest is a 2nd-century mathematical and astronomical treatise on the apparent motions of the stars and planetary paths, written by Claudius Ptolemy in Koine Greek.
Andromeda Galaxy
The Andromeda Galaxy is a barred spiral galaxy and is the nearest major galaxy to the Milky Way.
See Nebula and Andromeda Galaxy
Astronomical object
An astronomical object, celestial object, stellar object or heavenly body is a naturally occurring physical entity, association, or structure that exists within the observable universe.
See Nebula and Astronomical object
Astronomy & Geophysics
Astronomy & Geophysics (A&G) is a scientific journal and trade magazine published on behalf of the Royal Astronomical Society (RAS) by Oxford University Press.
See Nebula and Astronomy & Geophysics
Astronomy in the medieval Islamic world
Medieval Islamic astronomy comprises the astronomical developments made in the Islamic world, particularly during the Islamic Golden Age (9th–13th centuries), and mostly written in the Arabic language.
See Nebula and Astronomy in the medieval Islamic world
Asymptotic giant branch
The asymptotic giant branch (AGB) is a region of the Hertzsprung–Russell diagram populated by evolved cool luminous stars.
See Nebula and Asymptotic giant branch
Barnard Catalogue
The Barnard Catalogue is an astronomical catalogue of dark nebulae.
See Nebula and Barnard Catalogue
Barnard's Loop
Barnard's Loop (catalogue designation Sh 2-276) is an emission nebula in the constellation of Orion.
Boomerang Nebula
The Boomerang Nebula is a protoplanetary nebula located 1,200 light-years away from Earth in the constellation Centaurus. Nebula and Boomerang Nebula are nebulae.
See Nebula and Boomerang Nebula
Brocchi's Cluster
Brocchi's Cluster (also known as Collinder 399, Cr 399 or Al Sufi's Cluster) is a asterism of 10 stars.
See Nebula and Brocchi's Cluster
Caldwell catalogue
The Caldwell catalogue is an astronomical catalogue of 109 star clusters, nebulae, and galaxies for observation by amateur astronomers.
See Nebula and Caldwell catalogue
Cape of Good Hope
The Cape of Good Hope (Kaap die Goeie Hoop) is a rocky headland on the Atlantic coast of the Cape Peninsula in South Africa.
See Nebula and Cape of Good Hope
Carina Nebula
The Carina Nebula or Eta Carinae Nebula (catalogued as NGC 3372; also known as the Great Carina Nebula) is a large, complex area of bright and dark nebulosity in the constellation Carina, located in the Carina–Sagittarius Arm of the Milky Way galaxy. Nebula and Carina Nebula are nebulae.
Caroline Herschel
Caroline Lucretia Herschel (16 March 1750 – 9 January 1848) was a German-born British astronomer, whose most significant contributions to astronomy were the discoveries of several comets, including the periodic comet 35P/Herschel–Rigollet, which bears her name.
See Nebula and Caroline Herschel
Cat's Eye Nebula
The Cat's Eye Nebula (also known as NGC 6543 and Caldwell 6) is a planetary nebula in the northern constellation of Draco, discovered by William Herschel on February 15, 1786.
See Nebula and Cat's Eye Nebula
Charles Messier
Charles Messier (26 June 1730 – 12 April 1817) was a French astronomer.
See Nebula and Charles Messier
Chinese astronomy
Astronomy in China has a long history stretching from the Shang dynasty, being refined over a period of more than 3,000 years.
See Nebula and Chinese astronomy
Christiaan Huygens
Christiaan Huygens, Lord of Zeelhem, (also spelled Huyghens; Hugenius; 14 April 1629 – 8 July 1695) was a Dutch mathematician, physicist, engineer, astronomer, and inventor who is regarded as a key figure in the Scientific Revolution.
See Nebula and Christiaan Huygens
Comet
A comet is an icy, small Solar System body that warms and begins to release gases when passing close to the Sun, a process called outgassing. Nebula and comet are Concepts in astronomy.
See Nebula and Comet
Constellation
A constellation is an area on the celestial sphere in which a group of visible stars forms a perceived pattern or outline, typically representing an animal, mythological subject, or inanimate object. Nebula and constellation are Concepts in astronomy.
Cosmic dust
Cosmic dustalso called extraterrestrial dust, space dust, or star dustis dust that occurs in outer space or has fallen onto Earth. Nebula and Cosmic dust are nebulae.
Crab Nebula
The Crab Nebula (catalogue designations M1, NGC 1952, Taurus A) is a supernova remnant and pulsar wind nebula in the constellation of Taurus.
Dark nebula
A dark nebula or absorption nebula is a type of interstellar cloud, particularly molecular clouds, that is so dense that it obscures the visible wavelengths of light from objects behind it, such as background stars and emission or reflection nebulae. Nebula and dark nebula are nebulae.
Eagle Nebula
The Eagle Nebula (catalogued as Messier 16 or M16, and as NGC 6611, and also known as the Star Queen Nebula) is a young open cluster of stars in the constellation Serpens, discovered by Jean-Philippe de Cheseaux in 1745–46.
Earth
Earth is the third planet from the Sun and the only astronomical object known to harbor life.
See Nebula and Earth
Edmond Halley
Edmond (or Edmund) Halley (–) was an English astronomer, mathematician and physicist.
Edwin Hubble
Edwin Powell Hubble (November 20, 1889 – September 28, 1953) was an American astronomer.
Electron
The electron (or in nuclear reactions) is a subatomic particle with a negative one elementary electric charge.
Emission nebula
An emission nebula is a nebula formed of ionized gases that emit light of various wavelengths. Nebula and emission nebula are nebulae.
See Nebula and Emission nebula
Emission spectrum
The emission spectrum of a chemical element or chemical compound is the spectrum of frequencies of electromagnetic radiation emitted due to electrons making a transition from a high energy state to a lower energy state.
See Nebula and Emission spectrum
Engraved Hourglass Nebula
The Engraved Hourglass Nebula (also known as MyCn 18) is a young planetary nebula in the southern constellation Musca.
See Nebula and Engraved Hourglass Nebula
Eskimo Nebula
The Eskimo Nebula (NGC 2392), also known as the Clown-faced Nebula, Lion Nebula, or Caldwell 39, is a bipolar double-shell planetary nebula (PN).
European Southern Observatory
The European Organisation for Astronomical Research in the Southern Hemisphere, commonly referred to as the European Southern Observatory (ESO), is an intergovernmental research organisation made up of 16 member states for ground-based astronomy.
See Nebula and European Southern Observatory
Fox Fur Nebula
The Fox Fur Nebula is a nebula (a formation of gas and dust) located in the constellation of Monoceros (the Unicorn) not far off the right arm of Orion and included in the NGC 2264 Region.
Galaxy
A galaxy is a system of stars, stellar remnants, interstellar gas, dust, and dark matter bound together by gravity. Nebula and galaxy are Concepts in astronomy.
Gas
Gas is one of the four fundamental states of matter.
See Nebula and Gas
Great Debate (astronomy)
The Great Debate, also called the Shapley–Curtis Debate, was held on 26 April 1920 at the Smithsonian Museum of Natural History, between the astronomers Harlow Shapley and Heber Curtis.
See Nebula and Great Debate (astronomy)
Gum catalog
The Gum catalog is an astronomical catalog of 84 emission nebulae in the southern sky.
H I region
An HI region or H I region (read H one) is a cloud in the interstellar medium composed of neutral atomic hydrogen (HI), in addition to the local abundance of helium and other elements. Nebula and h I region are nebulae.
H II region
An H II region or HII region is a region of interstellar atomic hydrogen that is ionized. Nebula and h II region are nebulae.
Helix Nebula
The Helix Nebula (also known as NGC 7293 or Caldwell 63) is a planetary nebula (PN) located in the constellation Aquarius.
Henry Norris Russell
Henry Norris Russell ForMemRS HFRSE FRAS (October 25, 1877 – February 18, 1957) was an American astronomer who, along with Ejnar Hertzsprung, developed the Hertzsprung–Russell diagram (1910).
See Nebula and Henry Norris Russell
Herbig–Haro object
Herbig–Haro (HH) objects are bright patches of nebulosity associated with newborn stars. Nebula and Herbig–Haro object are nebulae.
See Nebula and Herbig–Haro object
Horsehead Nebula
The Horsehead Nebula (also known as Barnard 33 or B33) is a small dark nebula in the constellation Orion.
See Nebula and Horsehead Nebula
Human eye
The human eye is an organ of the sensory nervous system that reacts to visible light and allows the use of visual information for various purposes including seeing things, keeping balance, and maintaining circadian rhythm.
Hydrogen
Hydrogen is a chemical element; it has symbol H and atomic number 1.
IC 2391
IC 2391 (also known as the Omicron Velorum Cluster or Caldwell 85) is an open cluster in the constellation Vela consisting of hot, young, blueish stars, some of which binaries and one of which is a quadruple.
Infrared
Infrared (IR; sometimes called infrared light) is electromagnetic radiation (EMR) with wavelengths longer than that of visible light but shorter than microwaves.
Interstellar medium
The interstellar medium (ISM) is the matter and radiation that exists in the space between the star systems in a galaxy. Nebula and interstellar medium are Concepts in astronomy, interstellar media and space plasmas.
See Nebula and Interstellar medium
Ion
An ion is an atom or molecule with a net electrical charge.
See Nebula and Ion
Jean-Philippe Loys de Cheseaux
Jean-Philippe Loys de Cheseaux (4 May 1718 – 30 November 1751) was a Swiss astronomer.
See Nebula and Jean-Philippe Loys de Cheseaux
Johann Baptist Cysat
Johann Baptist Cysat (Latinized as Cysatus; in French, Jean-Baptiste Cysat) (c. 1587 – March 17, 1657) was a Swiss Jesuit mathematician and astronomer, after whom the lunar crater Cysatus is named.
See Nebula and Johann Baptist Cysat
Kilogram
The kilogram (also kilogramme) is the base unit of mass in the International System of Units (SI), having the unit symbol kg.
Lagoon Nebula
The Lagoon Nebula (catalogued as Messier 8 or M8, NGC 6523, Sharpless 25, RCW 146, and Gum 72) is a giant interstellar cloud in the constellation Sagittarius.
Leo (constellation)
Leo is one of the constellations of the zodiac, between Cancer the crab to the west and Virgo the maiden to the east.
See Nebula and Leo (constellation)
Light-year
A light-year, alternatively spelled light year (ly or lyr), is a unit of length used to express astronomical distances and is equal to exactly 9,460,730,472,580.8 km (Scientific notation: 9.4607304725808 × 1012 km), which is approximately 5.88 trillion mi. Nebula and light-year are Concepts in astronomy.
List of diffuse nebulae
This is a list of diffuse nebulae.
See Nebula and List of diffuse nebulae
List of largest nebulae
Below is a list of the largest known nebulae so far discovered, ordered by actual diameter.
See Nebula and List of largest nebulae
Lists of nebulae
The following articles contain lists of nebulae. Nebula and lists of nebulae are nebulae.
See Nebula and Lists of nebulae
Lynds' Catalogue of Bright Nebulae
Lynds' Catalogue of Bright Nebulae (abbreviation: LBN) is an astronomical catalogue of bright nebulae.
See Nebula and Lynds' Catalogue of Bright Nebulae
Lynds' Catalogue of Dark Nebulae
Lynds' Catalogue of Dark Nebulae (abbreviation: LDN) is an astronomical catalogue of dark nebulae.
See Nebula and Lynds' Catalogue of Dark Nebulae
Lyra
paren, from λύρα; pronounced) is a small constellation. It is one of the 48 listed by the 2nd century astronomer Ptolemy, and is one of the modern 88 constellations recognized by the International Astronomical Union. Lyra was often represented on star maps as a vulture or an eagle carrying a lyre, and hence is sometimes referred to as Vultur Cadens or Aquila Cadens ("Falling Vulture" or "Falling Eagle"), respectively.
See Nebula and Lyra
Magellanic Clouds
The Magellanic Clouds (Magellanic system or Nubeculae Magellani) are two irregular dwarf galaxies in the southern celestial hemisphere.
See Nebula and Magellanic Clouds
Magnetic field
A magnetic field (sometimes called B-field) is a physical field that describes the magnetic influence on moving electric charges, electric currents, and magnetic materials.
Merope (star)
Merope, designated 23 Tauri (abbreviated 23 Tau), is a star in the constellation of Taurus and a member of the Pleiades star cluster.
Messier object
The Messier objects are a set of 110 astronomical objects catalogued by the French astronomer Charles Messier in his (Catalogue of Nebulae and Star Clusters).
Milky Way
The Milky Way is the galaxy that includes the Solar System, with the name describing the galaxy's appearance from Earth: a hazy band of light seen in the night sky formed from stars that cannot be individually distinguished by the naked eye.
Molecular cloud
A molecular cloud, sometimes called a stellar nursery (if star formation is occurring within), is a type of interstellar cloud, the density and size of which permit absorption nebulae, the formation of molecules (most commonly molecular hydrogen, H2), and the formation of H II regions. Nebula and molecular cloud are Concepts in astronomy and nebulae.
See Nebula and Molecular cloud
Moon
The Moon is Earth's only natural satellite.
See Nebula and Moon
Mz 3
Mz 3 (Menzel 3) is a young bipolar planetary nebula (PN) in the constellation Norma that is composed of a bright core and four distinct high-velocity outflows that have been named lobes, columns, rays, and chakram.
See Nebula and Mz 3
Nebula
A nebula (cloud, fog;: nebulae, nebulæ, or nebulas) is a distinct luminescent part of interstellar medium, which can consist of ionized, neutral, or molecular hydrogen and also cosmic dust. Nebula and nebula are Concepts in astronomy, interstellar media, nebulae and space plasmas.
Nebular hypothesis
The nebular hypothesis is the most widely accepted model in the field of cosmogony to explain the formation and evolution of the Solar System (as well as other planetary systems). Nebula and nebular hypothesis are Concepts in astronomy.
See Nebula and Nebular hypothesis
Neutron star
A neutron star is the collapsed core of a massive supergiant star.
NGC 3132
NGC 3132 (also known as the Eight-Burst Nebula, the Southern Ring Nebula, or Caldwell 74) is a bright and extensively studied planetary nebula in the constellation Vela.
Nicolas-Claude Fabri de Peiresc
Nicolas-Claude Fabri de Peiresc (1 December 1580 – 24 June 1637), often known simply as Peiresc, or by the Latin form of his name, Peirescius, was a French astronomer, antiquary and savant, who maintained a wide correspondence with scientists, and was a successful organizer of scientific inquiry.
See Nebula and Nicolas-Claude Fabri de Peiresc
Nicolas-Louis de Lacaille
Abbé Nicolas-Louis de Lacaille (15 March 171321 March 1762), formerly sometimes spelled de la Caille, was a French astronomer and geodesist who named 14 out of the 88 constellations.
See Nebula and Nicolas-Louis de Lacaille
Nuclear fusion
Nuclear fusion is a reaction in which two or more atomic nuclei, usually deuterium and tritium (hydrogen isotopes), combine to form one or more different atomic nuclei and subatomic particles (neutrons or protons).
O-type main-sequence star
An O-type main-sequence star (O V) is a main-sequence (core hydrogen-burning) star of spectral type O and luminosity class V. These stars have between 15 and 90 times the mass of the Sun and surface temperatures between 30,000 and 50,000 K. They are between 40,000 and 1,000,000 times as luminous as the Sun.
See Nebula and O-type main-sequence star
Omega Nebula
The Omega Nebula, also known as the Swan Nebula, Checkmark Nebula, Lobster Nebula, and the Horseshoe Nebula (catalogued as Messier 17 or M17 or NGC 6618) is an H II region in the constellation Sagittarius.
Orion molecular cloud complex
The Orion molecular cloud complex (or, simply, the Orion complex) is a star-forming region with stellar ages ranging up to 12 Myr.
See Nebula and Orion molecular cloud complex
Orion Nebula
The Orion Nebula (also known as Messier 42, M42, or NGC 1976) is a diffuse nebula situated in the Milky Way, being south of Orion's Belt in the constellation of Orion, and is known as the middle "star" in the "sword" of Orion.
Pelican Nebula
The Pelican Nebula (also known as IC 5070 and IC 5067) is an H II region associated with the North America Nebula in the constellation Cygnus.
Philosophical Transactions of the Royal Society
Philosophical Transactions of the Royal Society is a scientific journal published by the Royal Society.
See Nebula and Philosophical Transactions of the Royal Society
Photodissociation region
In astrophysics, photodissociation regions (or photon-dominated regions, PDRs) are predominantly neutral regions of the interstellar medium in which far ultraviolet photons strongly influence the gas chemistry and act as the most important source of heat. Nebula and photodissociation region are interstellar media.
See Nebula and Photodissociation region
Pillars of Creation
Pillars of Creation is a photograph taken by the Hubble Space Telescope of elephant trunks of interstellar gas and dust in the Eagle Nebula, in the Serpens constellation, some from Earth.
See Nebula and Pillars of Creation
Planet
A planet is a large, rounded astronomical body that is generally required to be in orbit around a star, stellar remnant, or brown dwarf, and is not one itself. Nebula and planet are Concepts in astronomy.
Planetary nebula
A planetary nebula is a type of emission nebula consisting of an expanding, glowing shell of ionized gas ejected from red giant stars late in their lives.
See Nebula and Planetary nebula
Planetary system
A planetary system is a set of gravitationally bound non-stellar objects in or out of orbit around a star or star system. Nebula and planetary system are Concepts in astronomy.
See Nebula and Planetary system
Pleiades
The Pleiades, also known as the Seven Sisters and Messier 45, reflects an observed pattern formed by those stars, in an asterism of an open star cluster containing middle-aged, hot B-type stars in the northwest of the constellation Taurus.
Protoplanetary nebula
A protoplanetary nebula or preplanetary nebula (PPN, plural PPNe) is an astronomical object which is at the short-lived episode during a star's rapid evolution between the late asymptotic giant branch (LAGB) phase and the subsequent planetary nebula (PN) phase. Nebula and protoplanetary nebula are nebulae.
See Nebula and Protoplanetary nebula
Ptolemy
Claudius Ptolemy (Πτολεμαῖος,; Claudius Ptolemaeus; AD) was an Alexandrian mathematician, astronomer, astrologer, geographer, and music theorist who wrote about a dozen scientific treatises, three of which were important to later Byzantine, Islamic, and Western European science.
Radio wave
Radio waves are a type of electromagnetic radiation with the lowest frequencies and the longest wavelengths in the electromagnetic spectrum, typically with frequencies below 300 gigahertz (GHz) and wavelengths greater than, about the diameter of a grain of rice.
RCW Catalogue
The RCW Catalogue (from Rodgers, Campbell & Whiteoak) is an astronomical catalogue of Hα-emission regions in the southern Milky Way, described in.
Red giant
A red giant is a luminous giant star of low or intermediate mass (roughly 0.3–8 solar masses) in a late phase of stellar evolution.
Red Rectangle Nebula
The Red Rectangle Nebula, so called because of its red color and unique rectangular shape, is a protoplanetary nebula in the Monoceros constellation.
See Nebula and Red Rectangle Nebula
Red Square Nebula
The Red Square Nebula is a celestial object located in the area of the sky occupied by star MWC 922 in the constellation Serpens.
See Nebula and Red Square Nebula
Reflection nebula
In astronomy, reflection nebulae are clouds of interstellar dust which might reflect the light of a nearby star or stars. Nebula and reflection nebula are nebulae.
See Nebula and Reflection nebula
Ring Nebula
The Ring Nebula (also catalogued as Messier 57, M57 and NGC 6720) is a planetary nebula in the northern constellation of Lyra.
Rosette Nebula
The Rosette Nebula (also known as Caldwell 49) is an H II region located near one end of a giant molecular cloud in the Monoceros region of the Milky Way Galaxy.
Sharpless catalog
The Sharpless catalog is a list of 313 H II regions (emission nebulae) intended to be comprehensive north of declination −27°.
See Nebula and Sharpless catalog
SN 1054
SN 1054 was a supernova that was first observed on, and remained visible until.
SN 1572
SN 1572 (Tycho's Supernova, Tycho's Nova), or B Cassiopeiae (B Cas), was a supernova of Type Ia in the constellation Cassiopeia, one of eight supernovae visible to the naked eye in historical records.
SNR 0509-67.5
SNR 0509-67.5 is a remnant from a supernova in the Large Magellanic Cloud (LMC), that is 160,000 light years away in the constellation Dorado.
Spectral line
A spectral line is a weaker or stronger region in an otherwise uniform and continuous spectrum.
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.
Star
A star is a luminous spheroid of plasma held together by self-gravity. Nebula and star are Concepts in astronomy.
See Nebula and Star
Star cluster
Star clusters are large groups of stars held together by self-gravitation.
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. Nebula and star formation are Concepts in astronomy.
Stellar evolution
Stellar evolution is the process by which a star changes over the course of its lifetime and how it can lead to the creation of a new star. Nebula and Stellar evolution are Concepts in astronomy.
See Nebula and Stellar evolution
Supernova
A supernova (supernovae or supernovas) is a powerful and luminous explosion of a star. Nebula and supernova are Concepts in astronomy.
Supernova remnant
A supernova remnant (SNR) is the structure resulting from the explosion of a star in a supernova. Nebula and supernova remnant are nebulae.
See Nebula and Supernova remnant
Synchrotron radiation
Synchrotron radiation (also known as magnetobremsstrahlung radiation) is the electromagnetic radiation emitted when relativistic charged particles are subject to an acceleration perpendicular to their velocity.
See Nebula and Synchrotron radiation
T Tauri star
T Tauri stars (TTS) are a class of variable stars that are less than about ten million years old.
Tarantula Nebula
The Tarantula Nebula (also known as 30 Doradus) is a large H II region in the Large Magellanic Cloud (LMC), forming its south-east corner (from Earth's perspective).
See Nebula and Tarantula Nebula
Taurus (constellation)
Taurus (Latin, 'Bull') is one of the constellations of the zodiac and is located in the northern celestial hemisphere.
See Nebula and Taurus (constellation)
The Book of Fixed Stars
The Book of Fixed Stars (italic, literally The Book of the Shapes of Stars) is an astronomical text written by Abd al-Rahman al-Sufi (Azophi) around 964.
See Nebula and The Book of Fixed Stars
The British Journal for the History of Science
The British Journal for the History of Science (a.k.a. BJHS) is an international academic journal published quarterly by Cambridge University Press in association with the British Society for the History of Science.
See Nebula and The British Journal for the History of Science
Timeline of knowledge about the interstellar and intergalactic medium
Timeline of knowledge about the interstellar medium and intergalactic medium.
See Nebula and Timeline of knowledge about the interstellar and intergalactic medium
Ultraviolet
Ultraviolet (UV) light is electromagnetic radiation of wavelengths of 10–400 nanometers, shorter than that of visible light, but longer than X-rays.
Ursa Major
Ursa Major (also known as the Great Bear) is a constellation in the northern sky, whose associated mythology likely dates back into prehistory.
Vacuum
A vacuum (vacuums or vacua) is space devoid of matter.
Vesto M. Slipher
Vesto Melvin Slipher (November 11, 1875 – November 8, 1969) was an American astronomer who performed the first measurements of radial velocities for galaxies.
See Nebula and Vesto M. Slipher
Wavelength
In physics and mathematics, wavelength or spatial period of a wave or periodic function is the distance over which the wave's shape repeats.
White dwarf
A white dwarf is a stellar core remnant composed mostly of electron-degenerate matter.
William Herschel
Frederick William Herschel (Friedrich Wilhelm Herschel; 15 November 1738 – 25 August 1822) was a German-British astronomer and composer.
See Nebula and William Herschel
William Huggins
Sir William Huggins (7 February 1824 – 12 May 1910) was a British astronomer best known for his pioneering work in astronomical spectroscopy together with his wife, Margaret.
See Nebula and William Huggins
X-ray
X-rays (or rarely, X-radiation) are a form of high-energy electromagnetic radiation.
See Nebula and X-ray
See also
Interstellar media
- Bondi accretion
- Bonnor–Ebert mass
- Diffuse interstellar bands
- Dust lane
- Elephant trunk (astronomy)
- Extraterrestrial materials
- G-Cloud
- Hubble bubble (astronomy)
- Imidogen
- Infrared cirrus
- Interstellar cloud
- Interstellar formaldehyde
- Interstellar ice
- Interstellar medium
- Jeans instability
- List of interstellar and circumstellar molecules
- Local Bubble
- Local Leo Cold Cloud
- Local Void
- Lockman Hole
- Loop I Bubble
- Maggie (astronomy)
- Nebula
- Photodissociation region
- Pre-stellar cores
- Presolar grains
- Spinning dust
- Stellar-wind bubble
- Superbubble
References
[1] https://en.wikipedia.org/wiki/Nebula
Also known as Bright nebula, Bright nebulae, Bright nebulas, Diffuse nebula, Diffuse nebulae, Diffuse nebulas, Extragalactic nebula, Gaseous nebula, Gaseous nebulae, Gaseous nebulas, Nebulae, Nebulas, Nebulis, Nebulosity, Nebulous star, Types of Nebulae.
, Interstellar medium, Ion, Jean-Philippe Loys de Cheseaux, Johann Baptist Cysat, Kilogram, Lagoon Nebula, Leo (constellation), Light-year, List of diffuse nebulae, List of largest nebulae, Lists of nebulae, Lynds' Catalogue of Bright Nebulae, Lynds' Catalogue of Dark Nebulae, Lyra, Magellanic Clouds, Magnetic field, Merope (star), Messier object, Milky Way, Molecular cloud, Moon, Mz 3, Nebula, Nebular hypothesis, Neutron star, NGC 3132, Nicolas-Claude Fabri de Peiresc, Nicolas-Louis de Lacaille, Nuclear fusion, O-type main-sequence star, Omega Nebula, Orion molecular cloud complex, Orion Nebula, Pelican Nebula, Philosophical Transactions of the Royal Society, Photodissociation region, Pillars of Creation, Planet, Planetary nebula, Planetary system, Pleiades, Protoplanetary nebula, Ptolemy, Radio wave, RCW Catalogue, Red giant, Red Rectangle Nebula, Red Square Nebula, Reflection nebula, Ring Nebula, Rosette Nebula, Sharpless catalog, SN 1054, SN 1572, SNR 0509-67.5, Spectral line, Spiral galaxy, Star, Star cluster, Star formation, Stellar evolution, Supernova, Supernova remnant, Synchrotron radiation, T Tauri star, Tarantula Nebula, Taurus (constellation), The Book of Fixed Stars, The British Journal for the History of Science, Timeline of knowledge about the interstellar and intergalactic medium, Ultraviolet, Ursa Major, Vacuum, Vesto M. Slipher, Wavelength, White dwarf, William Herschel, William Huggins, X-ray.