129 relations: Active galactic nucleus, Alpha Centauri, Alpha Centaurids, Antlia, Apparent magnitude, Aratus, Asterism (astronomy), Azure Dragon, Bayer designation, Beta Centauri, Binary star, Binoculars, BPM 37093, Carbon, Carina (constellation), Centaur, Centaurus A, Centaurus Cluster, Centaurus in Chinese astronomy, Chinese astronomy, Chiron, Circinus, Constellation, Constellation family, Crux, Dark matter, Dark matter halo, Declination, Diamond, Dust lane, Dwarf galaxy, Edmond Halley, Elliptical galaxy, Epsilon Centauri, Eta Centauri, Eudoxus of Cnidus, Flamsteed designation, Flare star, G-type main-sequence star, Galactic Center, Galaxy cluster, Galaxy merger, Gamma Centauri, Globular cluster, Greek mythology, Hawaii, Heracles, Hotel rating, HR 5171, Hydra (constellation), ..., Interacting galaxy, International Astronomical Union, Intracluster medium, Iota Centauri, Irregular galaxy, Islamabad, James Dunlop, Jason, John Herschel, Libra (constellation), Light-year, List of brightest stars, List of shopping malls in Romania, Lucy in the Sky with Diamonds, Luminosity, Lupus (constellation), Messier 83, Milky Way, Mira variable, Musca, NGC 3766, NGC 3918, NGC 4622, NGC 4650A, NGC 5102, NGC 5253, NGC 5460, Omega Centauri, Omicron Centaurids, Ovid, Planetary nebula, Polar-ring galaxy, Polynesians, Precession, Prometheus Books, Proper motion, Proxima Centauri, Ptolemy, Pukapuka, R Centauri, Radio wave, Red dwarf, Red giant, Redshift, Sagittarius (constellation), Semiregular variable star, Solar luminosity, Solar System, South Pole, Southern celestial hemisphere, Spiral galaxy, Star hopping, Star system, Stellar classification, Supermassive black hole, Supernova, Synchrotron radiation, The Centaurus, Theseus, Theta Centauri, Theta Centaurids, Tonga, Tuamotus, United States Navy, Uranus, USS Centaurus (AKA-17), V810 Centauri, Variable star, Vela (constellation), Vermilion Bird, Visible spectrum, White dwarf, Xu Guangqi, Yale University Press, Zodiac, 25th parallel north, 3 Centauri, 47 Tucanae, 88 modern constellations by area. Expand index (79 more) » « Shrink index
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.
Alpha Centauri (α Centauri, abbreviated Alf Cen or α Cen) is the star system closest to the Solar System, being from the Sun.
The Alpha Centaurids are a meteor shower in the constellation Centaurus, peaking in early February each year.
Antlia (from Ancient Greek ἀντλία) is a constellation in the Southern Celestial Hemisphere.
The apparent magnitude of a celestial object is a number that is a measure of its brightness as seen by an observer on Earth.
Aratus (Ἄρατος ὁ Σολεύς; ca. 315 BC/310 BC240) was a Greek didactic poet.
In observational astronomy, an asterism is a popular known pattern or group of stars that are recognised in the night sky.
The Azure Dragon (青龍 Qīnglóng), also known as Bluegreen Dragon, Green Dragon, or also called the Blue Dragon (蒼龍 Cānglóng), is one of the Dragon Gods who represent the mount or chthonic forces of the Five Forms of the Highest Deity (五方上帝 Wǔfāng Shàngdì).
A Bayer designation is a stellar designation in which a specific star is identified by a Greek letter, followed by the genitive form of its parent constellation's Latin name.
Beta Centauri (β Centauri, abbreviated Beta Cen, β Cen), also named Agena and Hadar, is a triple star system in the southern constellation of Centaurus.
A binary star is a star system consisting of two stars orbiting around their common barycenter.
Binoculars or field glasses are two telescopes mounted side-by-side and aligned to point in the same direction, allowing the viewer to use both eyes (binocular vision) when viewing distant objects.
BPM 37093 (V886 Centauri) is a variable white dwarf star of the DAV, or ZZ Ceti, type, with a hydrogen atmosphere and an unusually high mass of approximately 1.1 times the Sun's.
Carbon (from carbo "coal") is a chemical element with symbol C and atomic number 6.
Carina is a constellation in the southern sky.
A centaur (Κένταυρος, Kéntauros), or occasionally hippocentaur, is a mythological creature with the upper body of a human and the lower body and legs of a horse.
Centaurus A or NGC 5128 is a galaxy in the constellation of Centaurus.
The Centaurus Cluster (A3526) is a cluster of hundreds of galaxies, located approximately 170 million light years away in the Centaurus constellation.
The modern constellation Centaurus lies across two of the quadrants symbolized by the Azure Dragon of the East (東方青龍, Dōng Fāng Qīng Lóng), the Vermillion Bird of the South (南方朱雀, Nán Fāng Zhū Què), and the Southern Asterisms (近南極星區, Jìnnánjíxīngōu).
Astronomy in China has a long history, beginning from the Shang Dynasty (Chinese Bronze Age).
In Greek mythology, Chiron (also Cheiron or Kheiron; Χείρων "hand") was held to be the superlative centaur amongst his brethren, as he was called as the "wisest and justest of all the centaurs".
Circinus is a small, faint constellation in the southern sky, first defined in 1756 by the French astronomer Nicolas-Louis de Lacaille.
A constellation is a group of stars that are considered to form imaginary outlines or meaningful patterns on the celestial sphere, typically representing animals, mythological people or gods, mythological creatures, or manufactured devices.
Constellation families are collections of constellations sharing some defining characteristic, such as proximity on the celestial sphere, common historical origin, or common mythological theme.
Crux is a constellation located in the southern sky in a bright portion of the Milky Way.
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.
A dark matter halo is a hypothetical component of a galaxy that envelops the galactic disc and extends well beyond the edge of the visible galaxy.
In astronomy, declination (abbreviated dec; symbol δ) is one of the two angles that locate a point on the celestial sphere in the equatorial coordinate system, the other being hour angle.
Diamond is a solid form of carbon with a diamond cubic crystal structure.
A dust lane is a relatively dense obscuring band of interstellar dust, observed as a dark swath against the background of a brighter object, especially a 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.
Edmond (or Edmund) Halley, FRS (–) was an English astronomer, geophysicist, mathematician, meteorologist, and physicist.
An elliptical galaxy is a type of galaxy having an approximately ellipsoidal shape and a smooth, nearly featureless image.
Epsilon Centauri (ε Cen, ε Centauri) is a star in the southern constellation of Centaurus.
Eta Centauri, Latinized from η Centauri, is a star in the southern constellation of Centaurus.
Eudoxus of Cnidus (Εὔδοξος ὁ Κνίδιος, Eúdoxos ho Knídios) was an ancient Greek astronomer, mathematician, scholar, and student of Archytas and Plato.
A Flamsteed designation is a combination of a number and constellation name that uniquely identifies most naked eye stars in the modern constellations visible from southern England.
A flare star is a variable star that can undergo unpredictable dramatic increases in brightness for a few minutes.
A G-type main-sequence star (Spectral type: G-V), often (and imprecisely) called a yellow dwarf, or G dwarf star, is a main-sequence star (luminosity class V) of spectral type G. Such a star has about 0.84 to 1.15 solar masses and surface temperature of between 5,300 and 6,000 K., G. M. H. J. Habets and J. R. W. Heintze, Astronomy and Astrophysics Supplement 46 (November 1981), pp.
The Galactic Center is the rotational center of the Milky Way.
A galaxy cluster, or cluster of galaxies, is a structure that consists of anywhere from hundreds to thousands of galaxies that are bound together by gravity with typical masses ranging from 1014–1015 solar masses.
Galaxy mergers can occur when two (or more) galaxies collide.
Gamma Centauri (γ Cen, γ Centauri) is a star in the southern constellation Centaurus.
A globular cluster is a spherical collection of stars that orbits a galactic core as a satellite.
Greek mythology is the body of myths and teachings that belong to the ancient Greeks, concerning their gods and heroes, the nature of the world, and the origins and significance of their own cult and ritual practices.
Hawaii (Hawaii) is the 50th and most recent state to have joined the United States, having received statehood on August 21, 1959.
Heracles (Ἡρακλῆς, Hēraklês, Glory/Pride of Hēra, "Hera"), born Alcaeus (Ἀλκαῖος, Alkaios) or Alcides (Ἀλκείδης, Alkeidēs), was a divine hero in Greek mythology, the son of Zeus and Alcmene, foster son of AmphitryonBy his adoptive descent through Amphitryon, Heracles receives the epithet Alcides, as "of the line of Alcaeus", father of Amphitryon.
Hotel ratings are often used to classify hotels according to their quality.
HR 5171, also known as V766 Centauri, is a triple star system in the constellation Centaurus, around 12,000 light years from Earth.
Hydra is the largest of the 88 modern constellations, measuring 1303 square degrees.
Interacting galaxies (colliding galaxies) are galaxies whose gravitational fields result in a disturbance of one another.
The International Astronomical Union (IAU; Union astronomique internationale, UAI) is an international association of professional astronomers, at the PhD level and beyond, active in professional research and education in astronomy.
In astronomy, the intracluster medium (ICM) is the superheated plasma that permeates a galaxy cluster.
Iota Centauri, Latinized from ι Centauri, is a star in the southern constellation of Centaurus.
An irregular galaxy is a galaxy that does not have a distinct regular shape, unlike a spiral or an elliptical galaxy.
Islamabad (اسلام آباد) is the capital city of Pakistan located within the federal Islamabad Capital Territory.
James Dunlop FRSE (31 October 1793 – 22 September 1848) was a Scottish astronomer, noted for his work in Australia.
Jason (Ἰάσων Iásōn) was an ancient Greek mythological hero who was the leader of the Argonauts whose quest for the Golden Fleece featured in Greek literature.
Sir John Frederick William Herschel, 1st Baronet (7 March 1792 – 11 May 1871) was an English polymath, mathematician, astronomer, chemist, inventor, experimental photographer who invented the blueprint, and did botanical work.
Libra is a constellation of the zodiac.
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.
This is a list of the brightest naked eye stars to +2.50 magnitude, as determined by their maximum, total, or combined apparent visual magnitudes as seen from Earth.
This is a list of shopping malls, retail parks, and department stores in Romania.
"Lucy in the Sky with Diamonds" is a song credited to Lennon–McCartney that appears on the Beatles' 1967 album Sgt. Pepper's Lonely Hearts Club Band.
In astronomy, luminosity is the total amount of energy emitted per unit of time by a star, galaxy, or other astronomical object.
Lupus is a constellation located in the deep Southern Sky.
Messier 83 (also known as the Southern Pinwheel Galaxy, M83 or NGC 5236) is a barred spiral galaxy approximately 15 million light-years away in the constellation Hydra.
The Milky Way is the galaxy that contains our Solar System.
Mira variables ("Mira", Latin, adj. - feminine form of adjective "wonderful"), named for the prototype star Mira, are a class of pulsating variable stars characterized by very red colours, pulsation periods longer than 100 days, and amplitudes greater than one magnitude in infrared and 2.5 magnitude at visual wavelengths.
Musca is a small constellation in the deep southern sky.
NGC 3766 is an open star cluster in the southern constellation Centaurus.
NGC 3918 is a bright planetary nebula in the constellation Centaurus, nicknamed the "Blue Planetary" or "The Southerner".
NGC 4622 is a face-on unbarred spiral galaxy with a very prominent ring structure located in the constellation Centaurus.
NGC 4650A is a polar-ring lenticular galaxy located in the constellation Centaurus.
NGC 5102 is a galaxy in the M83 group of galaxies.
NGC 5253 is an irregular galaxy in the constellation Centaurus.
NGC 5460 is an open cluster in the constellation Centaurus.
Omega Centauri (ω Cen or NGC 5139) is a globular cluster in the constellation of Centaurus that was first identified as a non-stellar object by Edmond Halley in 1677.
The Omicron Centaurids meteor shower has a radiant which is in the constellation Centaurus which is visible from the southern hemisphere.
Publius Ovidius Naso (20 March 43 BC – 17/18 AD), known as Ovid in the English-speaking world, was a Roman poet who lived during the reign of Augustus.
A planetary nebula, abbreviated as PN or plural PNe, is a type of emission nebula consisting of an expanding, glowing shell of ionized gas ejected from red giant stars late in their lives.
A polar-ring galaxy is a type of galaxy in which an outer ring of gas and stars rotates over the poles of the galaxy.
The Polynesians are a subset of Austronesians native to the islands of Polynesia that speak the Polynesian languages, a branch of the Oceanic subfamily of the Austronesian language family.
Precession is a change in the orientation of the rotational axis of a rotating body.
Prometheus Books is a publishing company founded in August 1969 by the philosopher Paul Kurtz (who was also the founder of the Council for Secular Humanism, Center for Inquiry, and co-founder of the Committee for Skeptical Inquiry).
Proper motion is the astronomical measure of the observed changes in the apparent places of stars or other celestial objects in the sky, as seen from the center of mass of the Solar System, compared to the abstract background of the more distant stars.
Proxima Centauri, or Alpha Centauri C, is a red dwarf, a small low-mass star, about from the Sun in the constellation of Centaurus.
Claudius Ptolemy (Κλαύδιος Πτολεμαῖος, Klaúdios Ptolemaîos; Claudius Ptolemaeus) was a Greco-Roman mathematician, astronomer, geographer, astrologer, and poet of a single epigram in the Greek Anthology.
Pukapuka is a coral atoll in the northern group of the Cook Islands in the Pacific Ocean.
R Centauri (R Cen) is a Mira variable star in the constellation Centaurus.
Radio waves are a type of electromagnetic radiation with wavelengths in the electromagnetic spectrum longer than infrared light.
A red dwarf (or M dwarf) is a small and relatively cool star on the main sequence, of M spectral type.
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.
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.
Sagittarius is one of the constellations of the zodiac.
Semiregular variable stars are giants or supergiants of intermediate and late spectral type showing considerable periodicity in their light changes, accompanied or sometimes interrupted by various irregularities.
The solar luminosity,, is a unit of radiant flux (power emitted in the form of photons) conventionally used by astronomers to measure the luminosity of stars, galaxies and other celestial objects in terms of the output of the Sun.
The Solar SystemCapitalization of the name varies.
The South Pole, also known as the Geographic South Pole or Terrestrial South Pole, is one of the two points where the Earth's axis of rotation intersects its surface.
The Southern Celestial Hemisphere, or the Southern Sky, is the southern half of the celestial sphere, which appears to rotate around a polar axis due to Earth's rotation.
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 hopping is a technique that amateur astronomers often use to locate astronomical objects in the night sky.
A star system or stellar system is a small number of stars that orbit each other, bound by gravitational attraction.
In astronomy, stellar classification is the classification of stars based on their spectral characteristics.
A supermassive black hole (SMBH or SBH) is the largest type of black hole, on the order of hundreds of thousands to billions of solar masses, and is found in the centre of almost all currently known massive galaxies.
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.
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.
The Centaurus is a mixed use real estate development in the city of Islamabad, Pakistan.
Theseus (Θησεύς) was the mythical king and founder-hero of Athens.
Theta Centauri (θ Centauri, abbreviated Theta Cen, θ Cen), also named Menkent, is a star in the southern constellation of Centaurus, the centaur.
Theta Centaurids is a weak meteor shower that occurs from January 23 to March 12.
Tonga (Tongan: Puleʻanga Fakatuʻi ʻo Tonga), officially the Kingdom of Tonga, is a Polynesian sovereign state and archipelago comprising 169 islands, of which 36 are inhabited.
The Tuamotus, also referred to in English as the Tuamotu Archipelago or the Tuamotu Islands (Îles Tuamotu, officially Archipel des Tuamotu), are a French Polynesian chain of almost 80 islands and atolls forming the largest chain of atolls in the world.
The United States Navy (USN) is the naval warfare service branch of the United States Armed Forces and one of the seven uniformed services of the United States.
Uranus is the seventh planet from the Sun.
USS Centaurus (AKA-17) was an named after the constellation Centaurus. She was one of a handful of World War II AKAs manned by officers and crew from the United States Coast Guard.
V810 Centauri is a double star consisting of a yellow supergiant primary (V810 Cen A) and blue giant secondary (V810 Cen B).
A variable star is a star whose brightness as seen from Earth (its apparent magnitude) fluctuates.
Vela is a constellation in the southern sky.
The Vermilion bird is one of the Four Symbols of the Chinese constellations.
The visible spectrum is the portion of the electromagnetic spectrum that is visible to the human eye.
A white dwarf, also called a degenerate dwarf, is a stellar core remnant composed mostly of electron-degenerate matter.
Xu Guangqi or Hsü Kuang-ch'i (April 24, 1562– November 8, 1633), also known by his baptismal name Paul, was a Chinese scholar-bureaucrat, Catholic convert, agricultural scientist, astronomer, and mathematician under the Ming dynasty.
Yale University Press is a university press associated with Yale University.
The zodiac is an area of the sky that extends approximately 8° north or south (as measured in celestial latitude) of the ecliptic, the apparent path of the Sun across the celestial sphere over the course of the year.
The 25th parallel north is a circle of latitude that is 25 degrees north of the Earth's equatorial plane.
3 Centauri is a binary star in the constellation Centaurus.
47 Tucanae, 47 Tuc (or NGC 104) is a globular cluster located in the constellation Tucana.
The table below ranks the 88 modern constellations by the solid angle that they subtend in the sky, measured in square degrees and millisteradians.