265 relations: A-type main-sequence star, Absolute magnitude, Adam, AE Aurigae, Aegis, Alexander Stewart Herschel, Almagest, Alpha Ophiuchi, Altair, Amalthea (mythology), Amphictyon, Antares, Antonia Maury, Aperture, Argonauts, Asclepius, Asterism (astronomy), Astronomical unit, Athena, Athens, Aurigids, Aztecs, B-type main-sequence star, Bedouin, Bellerophon, Beta Aquilae, Beta Aurigae, Beta Tauri, Binary star, Bororo, Brahma, Bright giant, Caiman, Calcium, California, Camelopardalis, Capella, Carbon, Carbon star, Carl Clarence Kiess, Caroline Islands, Castor (star), Celestial equator, Celestial sphere, Centre de données astronomiques de Strasbourg, Cepheid variable, Chariot, Charles Messier, Charles Piazzi Smyth, Chi Aurigae, ..., Chthonic, Cleostratus, Coma Berenicids, Comet, Constellation, Constellation family, Corona, Cuno Hoffmeister, Dearborn Observatory, Declination, Delta Aurigae, Delta Aurigids, Delta Leonis, Double star, DQ Herculis, Earth-grazing fireball, Edward Emerson Barnard, Emission nebula, Epsilon Aurigae, Equatorial coordinate system, Erichthonius of Athens, Eta Aurigae, Eugène Joseph Delporte, Eyepiece, Former constellations, G-type main-sequence star, Gaius Julius Hyginus, Galactic anticenter, Galactic Center, Gamma Aquilae, Gemini (constellation), Giant star, Giovanni Battista Riccioli, GK Persei, Gliese 268, Glossary of astronomy, Goat, Greek mythology, Guillaume Le Gentil, HAT-P-9, HAT-P-9b, HD 30453, HD 40979, HD 40979 b, HD 43691, HD 43691 b, HD 45350, HD 45350 b, HD 49674, HD 49674 b, Heliacal rising, Hephaestus, Hermes, Hippodamia, Hippolytus (son of Theseus), Hot Jupiter, Hyades (star cluster), Hydra (constellation), Hydrogen, IC 405, Indian astronomy, Indigenous peoples of the Americas, Infrared, International Astronomical Union, Inuit astronomy, Iota Aurigae, Iron, Jacob Micyllus, Jason, Joel Stebbins, Johann Bayer, Johann Elert Bode, John August Anderson, Jupiter (mythology), Jupiter mass, Kappa Aurigae, KELT-2A, KELT-2Ab, Lambda Aurigae, Latin, Lepus (constellation), Lick Observatory, Light-year, Lists of constellations, Luminosity, Lynx (constellation), Main sequence, Marcus Manilius, Marshall Islands, Maximilian Hell, Medea, Mesopotamia, Messier 36, Messier 37, Messier 38, Metallicity, Methods of detecting exoplanets, Milky Way, Minute and second of arc, Mira variable, Monte Albán, Mount Olympus, Mount Wilson Observatory, Mu Aurigae, Mu Columbae, MUL.APIN, Mule, Myrtilus, Nebula, Nevada, New Mexico State University, NGC 1664, NGC 1893, NGC 1907, NGC 1931, NGC 2281, Nitrogen, North Pole, Northern Hemisphere, Nu Aurigae, Nuclear fusion, Nymph, O-type star, Oenomaus, Omega Aurigae, Ontong Java Atoll, Open cluster, Orion (constellation), Orion Nebula, Otto Wilhelm von Struve, Parsec, Pawnee people, Pegasus, Pelops, Perseus (constellation), Peter Jenniskens, Petroglyph, Phaedra (mythology), Photometry (astronomy), Pi (letter), Pi Aurigae, Pleiades, Pliny the Elder, Pollux (star), Popular Astronomy (US magazine), Proper motion, Psi1 Aurigae, Psi7 Aurigae, Ptolemy, Pukapuka, Quadriga, R Aurigae, Radial velocity, Radiant (meteor shower), Red dwarf, Red giant, Reflection nebula, Regulus, Right ascension, Robert Burnham Jr., RT Aurigae, Scimitar, Scorpius, Sherburne Wesley Burnham, Sigma Aurigae, SIMBAD, Society Islands, Solar luminosity, Solar mass, Solar radius, Spectral line, Spectroscopy, SS Cygni, Star system, Stellar atmosphere, Stellar classification, Stellar evolution, Stellar kinematics, Stellar wind, Subgiant, Sun, Supergiant star, Supernova, Surface brightness, T Aurigae, Tau Aurigae, Taurids, Taurus (constellation), Telescopium Herschelii, Theseus, Theta Aurigae, Thomas David Anderson, Titan (mythology), Upsilon Aurigae, Uranus, Ursa Major Moving Group, UU Aurigae, V603 Aquilae, Variable star, White dwarf, William Denning, William Herschel, William Wallace Campbell, Winter Hexagon, WZ Sagittae, X-ray, Xi Aurigae, Yellow giant, Zenithal hourly rate, Zeta Aurigae, 14 Aurigae, 2 Aurigae, 40th parallel south, 53 Arietis, 9 Aurigae. Expand index (215 more) » « Shrink index
An A-type main-sequence star (A V) or A dwarf star is a main-sequence (hydrogen-burning) star of spectral type A and luminosity class V. These stars have spectra which are defined by strong hydrogen Balmer absorption lines.
Absolute magnitude is a measure of the luminosity of a celestial object, on a logarithmic astronomical magnitude scale.
Adam (ʾĀdam; Adám) is the name used in the opening chapters of the Book of Genesis for the first man created by God, but it is also used in a collective sense as "mankind" and individually as "a human".
AE Aurigae (abbreviated as AE Aur) is a runaway star in the constellation Auriga; it lights the Flaming Star Nebula.
The aegis (αἰγίς aigis), as stated in the Iliad, is carried by Athena and Zeus, but its nature is uncertain.
Professor Alexander Stewart Herschel (5 February 1836 – 18 June 1907) was a British astronomer.
The Almagest is a 2nd-century Greek-language mathematical and astronomical treatise on the apparent motions of the stars and planetary paths, written by Claudius Ptolemy. One of the most influential scientific texts of all time, its geocentric model was accepted for more than 1200 years from its origin in Hellenistic Alexandria, in the medieval Byzantine and Islamic worlds, and in Western Europe through the Middle Ages and early Renaissance until Copernicus.
Alpha Ophiuchi (α Ophiuchi, abbreviated Alpha Oph, α Oph), also called Rasalhague, is a binary star and the brightest star in the constellation of Ophiuchus.
Altair, also designated Alpha Aquilae (α Aquilae, abbreviated Alpha Aql, α Aql), is the brightest star in the constellation of Aquila and the twelfth brightest star in the night sky.
In Greek mythology, Amaltheia (Ἀμάλθεια) is the most-frequently mentioned foster-mother of Zeus.
Amphictyon or Amphiktyon (Ἀμφικτυών), in Greek mythology, was a king of Thermopylae and later Athens.
Antares, also designated Alpha Scorpii (α Scorpii, abbreviated Alpha Sco, α Sco), is on average the fifteenth-brightest star in the night sky, and the brightest star in the constellation of Scorpius.
Antonia Maury (March 21, 1866 – January 8, 1952) was an American astronomer who published an important early catalog of stellar spectra.
In optics, an aperture is a hole or an opening through which light travels.
The Argonauts (Ἀργοναῦται Argonautai) were a band of heroes in Greek mythology, who in the years before the Trojan War, around 1300 BC, accompanied Jason to Colchis in his quest to find the Golden Fleece.
Asclepius (Ἀσκληπιός, Asklēpiós; Aesculapius) was a hero and god of medicine in ancient Greek religion and mythology.
In observational astronomy, an asterism is a popular known pattern or group of stars that are recognised in the night sky.
The astronomical unit (symbol: au, ua, or AU) is a unit of length, roughly the distance from Earth to the Sun.
Athena; Attic Greek: Ἀθηνᾶ, Athēnā, or Ἀθηναία, Athēnaia; Epic: Ἀθηναίη, Athēnaiē; Doric: Ἀθάνα, Athānā or Athene,; Ionic: Ἀθήνη, Athēnē often given the epithet Pallas,; Παλλὰς is the ancient Greek goddess of wisdom, handicraft, and warfare, who was later syncretized with the Roman goddess Minerva.
Athens (Αθήνα, Athína; Ἀθῆναι, Athênai) is the capital and largest city of Greece.
Aurigids is a meteor shower occurring primarily within September.
The Aztecs were a Mesoamerican culture that flourished in central Mexico in the post-classic period from 1300 to 1521.
A B-type main-sequence star (B V) is a main-sequence (hydrogen-burning) star of spectral type B and luminosity class V. These stars have from 2 to 16 times the mass of the Sun and surface temperatures between 10,000 and 30,000 K. B-type stars are extremely luminous and blue.
The Bedouin (badawī) are a grouping of nomadic Arab peoples who have historically inhabited the desert regions in North Africa, the Arabian Peninsula, Iraq and the Levant.
Bellerophon (Βελλεροφῶν) or Bellerophontes (Βελλεροφόντης) is a hero of Greek mythology.
Beta Aquilae, Latinized from β Aquilae (abbreviated Beta Aql or β Aql) is a binary star in the equatorial constellation of Aquila.
Beta Aurigae (β Aurigae, abbreviated Beta Aur, β Aur), also named Menkalinan, is a binary star system in the northern constellation of Auriga.
Beta Tauri (β Tauri, abbreviated Beta Tau, β Tau), also named Elnath, is the second-brightest star in the constellation of Taurus with an apparent magnitude of 1.65.
A binary star is a star system consisting of two stars orbiting around their common barycenter.
The Bororo are an indigenous people of Brazil, living in the state of Mato Grosso.
Brahma (Sanskrit: ब्रह्मा, IAST: Brahmā) is a creator god in Hinduism.
The luminosity class II in the Yerkes spectral classification is given to bright giants.
A caiman is an alligatorid crocodilian belonging to the subfamily Caimaninae, one of two primary lineages within Alligatoridae, the other being alligators.
Calcium is a chemical element with symbol Ca and atomic number 20.
California is a state in the Pacific Region of the United States.
Camelopardalis is a large but obscure constellation of the northern sky representing a giraffe.
Capella, also designated Alpha Aurigae (α Aurigae, abbreviated Alpha Aur, α Aur), is the brightest star in the constellation of Auriga, the sixth-brightest in the night sky, and the third-brightest in the northern celestial hemisphere after Arcturus and Vega.
Carbon (from carbo "coal") is a chemical element with symbol C and atomic number 6.
A carbon star is typically an asymptotic giant branch star, a luminous red giant, whose atmosphere contains more carbon than oxygen; the two elements combine in the upper layers of the star, forming carbon monoxide, which consumes all the oxygen in the atmosphere, leaving carbon atoms free to form other carbon compounds, giving the star a "sooty" atmosphere and a strikingly ruby red appearance.
Carl Clarence Kiess (October 18, 1887 – October 16, 1967) was an American astronomer.
The Caroline Islands (or the Carolines) are a widely scattered archipelago of tiny islands in the southwestern Pacific Ocean, to the north of New Guinea.
Castor, also designated Alpha Geminorum (α Geminorum, abbreviated Alpha Gem, α Gem) is the second-brightest star in the constellation of Gemini and one of the brightest stars in the night sky.
The celestial equator is the great circle of the imaginary celestial sphere on the same plane as the equator of Earth.
In astronomy and navigation, the celestial sphere is an abstract sphere with an arbitrarily large radius concentric to Earth.
The Centre de Données astronomiques de Strasbourg (CDS; English translation: Strasbourg Astronomical Data Center) is a data hub which collects and distributes astronomical information.
A Cepheid variable is a type of star that pulsates radially, varying in both diameter and temperature and producing changes in brightness with a well-defined stable period and amplitude.
A chariot is a type of carriage driven by a charioteer using primarily horses to provide rapid motive power.
Charles Messier (26 June 1730 – 12 April 1817) was a French astronomer most notable for publishing an astronomical catalogue consisting of nebulae and star clusters that came to be known as the 110 "Messier objects".
Charles Piazzi Smyth (3 January 1819 – 21 February 1900) was an English astronomer who was Astronomer Royal for Scotland from 1846 to 1888; he is known for many innovations in astronomy and his pyramidological and metrological studies of the Great Pyramid of Giza.
Chi Aurigae (χ Aur, χ Aurigae) is the Bayer designation for a binary star in the northern constellation of Auriga.
Christmas is an annual festival commemorating the birth of Jesus Christ,Martindale, Cyril Charles.
The Christmas season, also called the festive season, or the holiday season (mainly in the U.S. and Canada; often simply called the holidays),, is an annually recurring period recognized in many Western and Western-influenced countries that is generally considered to run from late November to early January.
Christmas Eve is the evening or entire day before Christmas Day, the festival commemorating the birth of Jesus.
Christmas traditions vary from country to country.
Chthonic (from translit, "in, under, or beneath the earth", from χθών italic "earth") literally means "subterranean", but the word in English describes deities or spirits of the underworld, especially in Ancient Greek religion.
Cleostratus (Κλεόστρατος; b. c. 520 BC; d. possibly 432 BC) was an astronomer of ancient Greece.
Comae Berenicids (IMO designation: COM; IAU shower number: 20) is a minor meteor shower with a radiant in the constellation Coma Berenices.
A comet is an icy small Solar System body that, when passing close to the Sun, warms and begins to release gases, a process called outgassing.
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.
A corona (Latin, 'crown') is an aura of plasma that surrounds the Sun and other stars.
Cuno Hoffmeister (2 February 1892 – 2 January 1968) was a German astronomer, observer and discoverer of variable stars, comets and minor planets, and founder of Sonneberg Observatory.
The Dearborn Observatory is an astronomical observatory located on the Evanston campus of Northwestern University.
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.
Delta Aurigae (δ Aur, δ Aurigae) is the Bayer designation for an astrometric binary star in the constellation Auriga.
Delta Aurigids is a minor reliable meteor shower that takes place from mid-September to early October.
Delta Leonis (δ Leonis, abbreviated Delta Leo, δ Leo), also named Zosma, is a star in the zodiac constellation of Leo.
In observational astronomy, a double star or visual double is a pair of stars that appear close to each other in the sky as seen from Earth when viewed through an optical telescope.
DQ Herculis (or Nova Herculis 1934) was a slow, bright nova occurring in Hercules in December 1934.
An Earth-grazing fireball (or Earth-grazer) is a fireball, a very bright meteor that enters Earth’s atmosphere and leaves again.
Edward Emerson Barnard (December 16, 1857 – February 6, 1923) was an American astronomer.
An emission nebula is a nebula formed of ionized gases that emit light of various wavelengths.
Epsilon Aurigae (ε Aurigae, abbreviated Eps Aur, ε Aur) is a multiple star system in the northern constellation of Auriga.
The equatorial coordinate system is a celestial coordinate system widely used to specify the positions of celestial objects.
In Greek mythology, King Erichthonius was a legendary early ruler of ancient Athens.
Eta Aurigae (η Aurigae, abbreviated Eta Aur, η Aur), also named Haedus, is a star in the northern constellation of Auriga.
Eugène Joseph Delporte (10 January 1882 – 19 October 1955) was a Belgian astronomer born in Genappe.
An eyepiece, or ocular lens, is a type of lens that is attached to a variety of optical devices such as telescopes and microscopes.
Former constellations are old historical Western constellations that for various reasons are no longer recognized or adopted as official constellations by the International Astronomical Union (IAU).
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.
Gaius Julius Hyginus (64 BC – AD 17) was a Latin author, a pupil of the famous Cornelius Alexander Polyhistor, and a freedman of Caesar Augustus.
The galactic anticenter is a direction in space directly opposite to the Galactic Center, as viewed from Earth.
The Galactic Center is the rotational center of the Milky Way.
Gamma Aquilae (γ Aquilae, abbreviated Gamma Aql, γ Aql), also known as Tarazed, is a star in the constellation of Aquila.
Gemini is one of the constellations of the zodiac.
A giant star is a star with substantially larger radius and luminosity than a main-sequence (or dwarf) star of the same surface temperature.
Giovanni Battista Riccioli (17 April 1598 – 25 June 1671) was an Italian astronomer and a Catholic priest in the Jesuit order.
GK Persei (also Nova Persei 1901) was a bright nova occurring in 1901.
Gliese 268 (QY Aurigae) is a RS Canum Venaticorum variable (RS CVn) star in the Auriga constellation.
This page is a glossary of astronomy.
The domestic goat (Capra aegagrus hircus) is a subspecies of goat domesticated from the wild goat of southwest Asia and Eastern Europe.
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.
Guillaume Joseph Hyacinthe Jean-Baptiste Le Gentil de la Galaisière (Coutances, 12 September 1725 – Paris, 22 October 1792) was a French astronomer.
HAT-P-9b is an exoplanet approximately 1560 light years away in the constellation Auriga.
HD 30453 (HR 1528) is a double-lined spectroscopic binary in the northern constellation of Auriga.
HD 40979 is a yellow-white dwarf star about 108 light-years away in the constellation of Auriga.
HD 40979 b is an extrasolar planet orbiting the star HD 40979, was detected from the Lick and Keck observatories and photometric observations at Fairborn Observatory reveal low-amplitude brightness variations in HD 40979.
HD 43691 is a G-type star with magnitude +8.03 located approximately 260 light-years away in the constellation Auriga.
HD 43691 b is a massive jovian planet located approximately 260 light-years away in the constellation of Auriga.
HD 45350 is an 8th magnitude star located approximately 160 light-years away in the constellation of Auriga.
HD 45350 b is an extrasolar planet located approximately 160 light-years away in the constellation of Auriga.
HD 49674 is an 8th magnitude G-type main-sequence star (spectral type G5V) located approximately 144 light years away in the constellation of Auriga.
HD 49674 b is an extrasolar planet located approximately 134 light-years away in the constellation of Auriga, orbiting the star HD 49674.
The heliacal rising or star rise of a star, star cluster, or galaxy occurs annually when it becomes visible above the eastern horizon for a moment before sunrise, after a period of less than a year when it had not been visible.
Hephaestus (eight spellings; Ἥφαιστος Hēphaistos) is the Greek god of blacksmiths, metalworking, carpenters, craftsmen, artisans, sculptors, metallurgy, fire, and volcanoes.
Hermes (Ἑρμῆς) is an Olympian god in Greek religion and mythology, the son of Zeus and the Pleiad Maia, and the second youngest of the Olympian gods (Dionysus being the youngest).
Hippodamia (also Hippodamea and Hippodameia; Ἱπποδάμεια "she who masters horses" derived from ἵππος hippos "horse" and δαμάζειν damazein "to tame") was a Greek mythological figure.
''The Death of Hippolytus'', by Sir Lawrence Alma-Tadema (1836–1912). In Greek mythology, Hippolytus (Ἱππόλυτος Hippolytos; "unleasher of horses") was a son of Theseus and either Antiope or Hippolyte.
Hot Jupiters are a class of gas giant exoplanets that are inferred to be physically similar to Jupiter but that have very short orbital period (P The close proximity to their stars and high surface-atmosphere temperatures resulted in the moniker "hot Jupiters". Hot Jupiters are the easiest extrasolar planets to detect via the radial-velocity method, because the oscillations they induce in their parent stars' motion are relatively large and rapid compared to those of other known types of planets. One of the best-known hot Jupiters is 51 Pegasi b. Discovered in 1995, it was the first extrasolar planet found orbiting a Sun-like star. 51 Pegasi b has an orbital period of about 4 days.
The Hyades (Greek Ὑάδες, also known as Melotte 25 or Collinder 50) is the nearest open cluster and one of the best-studied star clusters.
Hydra is the largest of the 88 modern constellations, measuring 1303 square degrees.
Hydrogen is a chemical element with symbol H and atomic number 1.
IC 405 (also known as the Flaming Star Nebula, SH 2-229, or Caldwell 31) is an emission/reflection nebula in the constellation Auriga, surrounding the bluish star AE Aurigae.
Indian astronomy has a long history stretching from pre-historic to modern times.
The indigenous peoples of the Americas are the pre-Columbian peoples of the Americas and their descendants. Although some indigenous peoples of the Americas were traditionally hunter-gatherers—and many, especially in the Amazon basin, still are—many groups practiced aquaculture and agriculture. The impact of their agricultural endowment to the world is a testament to their time and work in reshaping and cultivating the flora indigenous to the Americas. Although some societies depended heavily on agriculture, others practiced a mix of farming, hunting and gathering. In some regions the indigenous peoples created monumental architecture, large-scale organized cities, chiefdoms, states and empires. Many parts of the Americas are still populated by indigenous peoples; some countries have sizable populations, especially Belize, Bolivia, Canada, Chile, Ecuador, Greenland, Guatemala, Guyana, Mexico, Panama and Peru. At least a thousand different indigenous languages are spoken in the Americas. Some, such as the Quechuan languages, Aymara, Guaraní, Mayan languages and Nahuatl, count their speakers in millions. Many also maintain aspects of indigenous cultural practices to varying degrees, including religion, social organization and subsistence practices. Like most cultures, over time, cultures specific to many indigenous peoples have evolved to incorporate traditional aspects but also cater to modern needs. Some indigenous peoples still live in relative isolation from Western culture, and a few are still counted as uncontacted peoples.
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.
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.
The Inuit have traditional names for many constellations, asterisms and stars.
Iota Aurigae (ι Aurigae, abbreviated Iot Aur, ι Aur), also named Hassaleh, is a star in the northern constellation of Auriga.
Iron is a chemical element with symbol Fe (from ferrum) and atomic number 26.
Jacob Micyllus, (6 April 1503 – 28 January 1558) was a German Renaissance humanist and teacher, who conducted the city's Latin school in Frankfurt and held a chair at the University of Heidelberg, during times of great cultural stress in Germany.
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.
Joel Stebbins (July 30, 1878 – March 16, 1966) was an American astronomer who pioneered photoelectric photometry in astronomy.
Johann Bayer (1572 – 7 March 1625) was a German lawyer and uranographer (celestial cartographer).
Johann Elert Bode (19 January 1747 – 23 November 1826) was a German astronomer known for his reformulation and popularisation of the Titius–Bode law.
John August Anderson (August 7, 1876 – December 2, 1959) was an American astronomer.
Jupiter (from Iūpiter or Iuppiter, *djous “day, sky” + *patēr “father," thus "heavenly father"), also known as Jove gen.
Jupiter mass, also called Jovian mass is the unit of mass equal to the total mass of the planet Jupiter.
Kappa Aurigae, Latinized as κ Aurigae, is the Bayer designation for a star in the northern constellation of Auriga.
KELT-2A (HD 42176A) is a yellow white dwarf star located about 440 light-years away in the constellation Auriga.
KELT-2Ab is an extrasolar planet that orbits the star KELT-2A approximately 440 light-years away in the constellation of Auriga.
Lambda Aurigae (λ Aur, λ Aurigae) is the Bayer designation for a solar analog star in the northern constellation of Auriga.
Latin (Latin: lingua latīna) is a classical language belonging to the Italic branch of the Indo-European languages.
Lepus is a constellation lying just south of the celestial equator.
The Lick Observatory is an astronomical observatory, owned and operated by the University of California.
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.
The following lists of constellations are available.
In astronomy, luminosity is the total amount of energy emitted per unit of time by a star, galaxy, or other astronomical object.
Lynx is a constellation named after the animal, usually observed in the northern sky.
In astronomy, the main sequence is a continuous and distinctive band of stars that appear on plots of stellar color versus brightness.
Marcus Manilius (fl. 1st century AD) was a Roman poet, astrologer, and author of a poem in five books called Astronomica.
The Marshall Islands, officially the Republic of the Marshall Islands (Aolepān Aorōkin M̧ajeļ), is an island country located near the equator in the Pacific Ocean, slightly west of the International Date Line.
Maximilian Hell (Hell Miksa) (May 15, 1720 – April 14, 1792) was a Hungarian astronomer and an ordained Jesuit priest from the Kingdom of Hungary.
In Greek mythology, Medea (Μήδεια, Mēdeia, მედეა) was the daughter of King Aeëtes of Colchis, niece of Circe, granddaughter of the sun god Helios.
Mesopotamia is a historical region in West Asia situated within the Tigris–Euphrates river system, in modern days roughly corresponding to most of Iraq, Kuwait, parts of Northern Saudi Arabia, the eastern parts of Syria, Southeastern Turkey, and regions along the Turkish–Syrian and Iran–Iraq borders.
Messier 36 (also known as M36, or NGC 1960) is an open cluster in the Auriga constellation.
Messier 37 (also known as M37 or NGC 2099) is the richest open cluster in the constellation Auriga.
Messier 38 (also known as M38 or NGC 1912) is an open cluster in the constellation of Auriga.
In astronomy, metallicity is used to describe the abundance of elements present in an object that are heavier than hydrogen or helium.
Any planet is an extremely faint light source compared to its parent star.
The Milky Way is the galaxy that contains our Solar System.
A minute of arc, arcminute (arcmin), arc minute, or minute arc is a unit of angular measurement equal to of one degree.
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.
Monte Albán is a large pre-Columbian archaeological site in the Santa Cruz Xoxocotlán Municipality in the southern Mexican state of Oaxaca (17.043° N, 96.767°W).
Mount Olympus (Όλυμπος Olympos, for Modern Greek also transliterated Olimbos, or) is the highest mountain in Greece.
The Mount Wilson Observatory (MWO) is an astronomical observatory in Los Angeles County, California, United States.
Mu Aurigae, Latinized as μ Aurigae, is the Bayer designation for a single, white-hued star in the northern constellation of Auriga.
Mu Columbae (μ Col, μ Columbae) is a star in the constellation of Columba.
MUL.APIN is the conventional title given to a Babylonian compendium that deals with many diverse aspects of Babylonian astronomy and astrology.
A mule is the offspring of a male donkey (jack) and a female horse (mare).
In Greek mythology, Myrtilus (Μυρτίλος) was a divine hero and son of Hermes.
A nebula (Latin for "cloud" or "fog"; pl. nebulae, nebulæ, or nebulas) is an interstellar cloud of dust, hydrogen, helium and other ionized gases.
Nevada (see pronunciations) is a state in the Western, Mountain West, and Southwestern regions of the United States of America.
New Mexico State University (NMSU or NM State) is a public, land-grant, research university in Las Cruces, New Mexico, United States, and the flagship campus of NMSU System.
NGC 1664 is an open cluster in the constellation of Auriga.
NGC 1893 is an open cluster in the constellation Auriga.
NGC 1907 is an open star cluster around 4,500 light years from Earth.
NGC 1931, found in the constellation Auriga has been referred to as a "miniature version of the Orion Nebula", as it shares some of the same characteristics.
NGC 2281 is an open cluster in the constellation Auriga.
New Year is the time or day at which a new calendar year begins and the calendar's year count increments by one.
New Year's Day, also called simply New Year's or New Year, is observed on January 1, the first day of the year on the modern Gregorian calendar as well as the Julian calendar.
In the Gregorian calendar, New Year's Eve (also known as Old Year's Day or Saint Sylvester's Day in many countries), the last day of the year, is on 31 December which is the seventh day of Christmastide.
Nitrogen is a chemical element with symbol N and atomic number 7.
The North Pole, also known as the Geographic North Pole or Terrestrial North Pole, is (subject to the caveats explained below) defined as the point in the Northern Hemisphere where the Earth's axis of rotation meets its surface.
The Northern Hemisphere is the half of Earth that is north of the Equator.
Nu Aurigae, Latinized from ν Aurigae, is the Bayer designation for a star in the northern constellation of Auriga.
In nuclear physics, nuclear fusion is a reaction in which two or more atomic nuclei come close enough to form one or more different atomic nuclei and subatomic particles (neutrons or protons).
A nymph (νύμφη, nýmphē) in Greek and Latin mythology is a minor female nature deity typically associated with a particular location or landform.
An O-type star is a hot, blue-white star of spectral type O in the Yerkes classification system employed by astronomers.
In Greek mythology, King Oenomaus (also Oenamaus; Οἱνόμαος, Oἱnómaos) of Pisa, the father of Hippodamia, was the son of Ares, either by the naiad Harpina (daughter of the river god Phliasian Asopus, the armed (harpe) spirit of a spring near Pisa) or by Sterope, one of the Pleiades, whom some identify as his consort instead.
Omega Aurigae, Latinized from ω Aurigae, is the Bayer designation for a double star in the northern constellation of Auriga.
Ontong Java Atoll or Luangiua is one of the largest atolls on earth.
An open cluster is a group of up to a few thousand stars that were formed from the same giant molecular cloud and have roughly the same age.
Orion is a prominent constellation located on the celestial equator and visible throughout the world.
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.
Otto Wilhelm von Struve (May 7, 1819 (Julian calendar: April 25) – April 14, 1905) was a Russian astronomer.
The parsec (symbol: pc) is a unit of length used to measure large distances to astronomical objects outside the Solar System.
The Pawnee are a Plains Indian tribe who are headquartered in Pawnee, Oklahoma.
Pegasus (Πήγασος, Pḗgasos; Pegasus, Pegasos) is a mythical winged divine stallion, and one of the most recognized creatures in Greek mythology.
In Greek mythology, Pelops (Greek: Πέλοψ), was king of Pisa in the Peloponnesus.
Perseus is a constellation in the northern sky, being named after the Greek mythological hero Perseus.
Petrus Matheus Marie (Peter) Jenniskens (born 2 August 1962 in Horst) is a Dutch and American astronomer and a senior research scientist at the Carl Sagan Center of the SETI Institute and at NASA Ames Research Center.
Petroglyphs are images created by removing part of a rock surface by incising, picking, carving, or abrading, as a form of rock art.
In Greek mythology, Phaedra (Φαίδρα, Phaidra) (or Fedra) is the daughter of Minos and Pasiphaë, wife of Theseus, sister of Ariadne, and the mother of Demophon of Athens and Acamas.
Photometry is a technique of astronomy concerned with measuring the flux, or intensity of an astronomical object's electromagnetic radiation.
Pi (uppercase Π, lowercase π; πι) is the sixteenth letter of the Greek alphabet, representing the sound.
Pi Aurigae, Latinized from π Aurigae, is the Bayer designation for a single, red-hued star in the northern constellation of Auriga.
The Pleiades (also known as the Seven Sisters and Messier 45), are an open star cluster containing middle-aged, hot B-type stars located in the constellation of Taurus.
Pliny the Elder (born Gaius Plinius Secundus, AD 23–79) was a Roman author, naturalist and natural philosopher, a naval and army commander of the early Roman Empire, and friend of emperor Vespasian.
Pollux, also designated Beta Geminorum (β Geminorum, abbreviated Beta Gem, β Gem), is an orange-hued evolved giant star approximately 34 light-years from the Sun in the northern constellation of Gemini.
Popular Astronomy is an American magazine published by John August Media, LLC and hosted at TechnicaCuriosa.com for amateur astronomers.
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.
Psi1 Aurigae (ψ1 Aur, ψ1 Aurigae) is the Bayer designation for a star in the northern constellation of Auriga.
Psi7 Aurigae, Latinized from ψ7 Aurigae, is the Bayer designation for a single star in the northern constellation of Auriga.
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.
A quadriga (Latin quadri-, four, and iugum, yoke) is a car or chariot drawn by four horses abreast (the Roman Empire's equivalent of Ancient Greek tethrippon).
R Aurigae (R Aur) is a M-type giant star in the constellation of Auriga.
The radial velocity of an object with respect to a given point is the rate of change of the distance between the object and the point.
The radiant or apparent radiant of a meteor shower is the point in the sky from which (to a planetary observer) meteors appear to originate.
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 astronomy, reflection nebulae are clouds of interstellar dust which might reflect the light of a nearby star or stars.
Regulus, also designated Alpha Leonis (α Leonis, abbreviated Alpha Leo, α Leo), is the brightest star in the constellation of Leo and one of the brightest stars in the night sky, lying approximately 79 light years from the Sun.
Right ascension (abbreviated RA; symbol) is the angular distance measured only eastward along the celestial equator from the Sun at the March equinox to the (hour circle of the) point above the earth in question.
Robert Burnham Jr. (June 16, 1931 – March 20, 1993) was an American astronomer, best known for writing the classic three-volume Burnham's Celestial Handbook.
RT Aurigae (RT Aur, 48 Aurigae) is a yellow supergiant variable star in the constellation Auriga, about 1,500 light years from Earth.
A scimitar is a backsword or sabre with a curved blade, originating in the Middle East.
Scorpius is one of the constellations of the zodiac.
Sherburne Wesley Burnham (December 12, 1838 – March 11, 1921) was an American astronomer.
Sigma Aurigae, Latinized from σ Aurigae, is the Bayer designation for a double star in the northern constellation of Auriga.
SIMBAD (the Set of Identifications, Measurements, and Bibliography for Astronomical Data) is an astronomical database of objects beyond the Solar System.
The Society Islands (Îles de la Société or officially Archipel de la Société; Tōtaiete mā.) includes a group of islands in the South Pacific Ocean.
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 mass is a standard unit of mass in astronomy, equal to approximately.
Solar radius is a unit of distance used to express the size of stars in astronomy.
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.
Spectroscopy is the study of the interaction between matter and electromagnetic radiation.
SS Cygni is a variable star in the northern constellation Cygnus (the Swan).
A star system or stellar system is a small number of stars that orbit each other, bound by gravitational attraction.
The stellar atmosphere is the outer region of the volume of a star, lying above the stellar core, radiation zone and convection zone.
In astronomy, stellar classification is the classification of stars based on their spectral characteristics.
Stellar evolution is the process by which a star changes over the course of time.
In astronomy, stellar kinematics is the observational study or measurement of the kinematics or motions of stars through space.
A stellar wind is a flow of gas ejected from the upper atmosphere of a star.
A subgiant is a star that is brighter than a normal main-sequence star of the same spectral class, but not as bright as true giant stars.
The Sun is the star at the center of the Solar System.
Supergiants are among the most massive and most luminous stars.
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.
In astronomy, surface brightness quantifies the apparent brightness or flux density per unit angular area of a spatially extended object such as a galaxy or nebula, or of the night sky background.
T Aurigae (or Nova Aurigae 1891) was a nova, which lit up in the constellation Auriga in 1891.
Tau Aurigae, Latinized from τ Aurigae, is the Bayer designation for a star in the northern constellation Auriga.
The Taurids are an annual meteor shower, associated with the comet Encke.
Taurus (Latin for "the Bull") is one of the constellations of the zodiac, which means it is crossed by the plane of the ecliptic.
Telescopium Herschelii (Latin for Herschel's telescope), also formerly known as Tubus Hershelli Major, is a former constellation in the northern celestial hemisphere.
Theseus (Θησεύς) was the mythical king and founder-hero of Athens.
Theta Aurigae (θ Aurigae, abbreviated Tet Aur, θ Aur) is a binary star in the constellation of Auriga.
Thomas David Anderson (6 February 1853 – 31 March 1932) was a Scottish amateur astronomer.
In Greek mythology, the Titans (Greek: Τιτάν, Titán, Τiτᾶνες, Titânes) and Titanesses (or Titanides; Greek: Τιτανίς, Titanís, Τιτανίδες, Titanídes) were members of the second generation of divine beings, descending from the primordial deities and preceding the Olympians.
Upsilon Aurigae, Latinized from υ Aurigae, is the Bayer designation for a star in the northern constellation of Auriga.
Uranus is the seventh planet from the Sun.
The Ursa Major Moving Group, also known as Collinder 285 and the Ursa Major association, is a nearby stellar moving group – a set of stars with common velocities in space and thought to have a common origin in space and time.
UU Aurigae is a carbon star and binary star in the constellation Auriga.
V603 Aquilae (or Nova Aquilae 1918) was a bright nova occurring in the constellation Aquila in 1918.
A variable star is a star whose brightness as seen from Earth (its apparent magnitude) fluctuates.
A white dwarf, also called a degenerate dwarf, is a stellar core remnant composed mostly of electron-degenerate matter.
William Denning (April 1740 – October 30, 1819) was a merchant and United States Representative from New York.
Frederick William Herschel, (Friedrich Wilhelm Herschel; 15 November 1738 – 25 August 1822) was a German-born British astronomer, composer and brother of fellow astronomer Caroline Herschel, with whom he worked.
William Wallace Campbell (April 11, 1862 – June 14, 1938) was an American astronomer, and director of Lick Observatory from 1901 to 1930.
The Winter Hexagon or Winter Circle/Oval is an asterism appearing to be in the form of a hexagon with vertices at Rigel, Aldebaran, Capella, Pollux, Procyon, and Sirius.
WZ Sagittae (WZ Sge) is a cataclysmic dwarf nova star system in the constellation Sagitta.
X-rays make up X-radiation, a form of electromagnetic radiation.
Xi Aurigae, Latinized from ξ Aurigae, is the Bayer designation for a single, white-hued star in the northern constellation of Auriga.
A yellow giant is a luminous giant star of low or intermediate mass (roughly 0.5–11 solar masses (M)) in a late phase of its stellar evolution.
In astronomy, the zenithal hourly rate (ZHR) of a meteor shower is the number of meteors a single observer would see in an hour of peak activity, assumed the conditions are excellent (stars visible up to magnitude 6,5).
Zeta Aurigae (ζ Aurigae, abbreviated Zet Aur, ζ Aur), is a binary star in the northern constellation of Auriga.
14 Aurigae or KW Aurigae is a star in the constellation Auriga.
2 Aurigae is a star in the constellation Auriga.
2018 has been designated as the third International Year of the Reef by the International Coral Reef Initiative.
2019 (MMXIX) will be a common year starting on Tuesday of the Gregorian calendar, the 2019th year of the Common Era (CE) and Anno Domini (AD) designations, the 19th year of the 3rd millennium, the 19th year of the 21st century, and the 10th and last year of the 2010s decade.
The 40th parallel south is a circle of latitude that is 40 degrees south of the Earth's equatorial plane.
53 Arietis (abbreviated 53 Ari) is a variable star in the northern constellation of Aries.
9 Aurigae (9 Aur) is a star in the constellation Auriga.