110 relations: Akkadian language, Alpha Sagittarii, Antares, Aquila (constellation), Archery, Asterism (astronomy), Astronomer, Baade's Window, Bart Bok, Beta Sagittarii, Bok globule, Camille Flammarion, Capricornus, Celestial sphere, Centaur, Centaurus, Charles Messier, Chiron, Constellation, Corona Australis, Cronus, Dark nebula, Delta Sagittarii, Dust lane, Earth, Epsilon Sagittarii, Eratosthenes, Eridu, Eta Sagittarii, Euphrates, Galactic Center, Gamma2 Sagittarii, George Frederick Chambers, Globular cluster, Greek mythology, Guillaume Le Gentil, Hercules (constellation), Indus (constellation), Jason, Jean-Philippe de Chéseaux, John Flamsteed, Krotos, Lagoon Nebula, Lambda Sagittarii, Latin, Light-year, Messier 22, Messier 28, Microscopium, Milky Way, ..., Minute and second of arc, Muses, National Geographic Society – Palomar Observatory Sky Survey, National Radio Astronomy Observatory, Nebula, Nergal, New Horizons, NGC 6440, NGC 6522, NGC 6528, NGC 6559, NGC 6603, NGC 6638, Nova, Omega Nebula, Ophiuchus, Orion (constellation), Pabilsaĝ, Pan (god), Phi Sagittarii, Philyra (mythology), Pi Sagittarii, Planetary nebula, Prometheus Books, Protostar, Ptolemy, Radioisotope thermoelectric generator, Red Spider Nebula, Reflection nebula, Rhea (mythology), Ross 154, Sagittarius A, Sagittarius A*, Sagittarius Dwarf Spheroidal Galaxy, Sagittarius Star Cloud, Satyr, Scorpius, Scutum (constellation), Serpens, Sidereal and tropical astrology, Sigma Sagittarii, Solar mass, South Pole, Space probe, Star cluster, Supermassive black hole, Tau Sagittarii, Teapot, Telescopium, Trifid Nebula, Unicode, V4641 Sagittarii, Wow! signal, Zeta Sagittarii, Zeus, Zodiac, 2MASS, 2MASS-GC02, 55th parallel north, 88 modern constellations. Expand index (60 more) » « Shrink index
Akkadian (akkadû, ak-ka-du-u2; logogram: URIKI)John Huehnergard & Christopher Woods, "Akkadian and Eblaite", The Cambridge Encyclopedia of the World's Ancient Languages.
Alpha Sagittarii (α Sagittarii, abbreviated Alpha Sgr, α Sgr), also named Rukbat, is a star in the constellation of Sagittarius.
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.
Aquila is a constellation on the celestial equator.
Archery is the art, sport, practice or skill of using a bow to shoot arrows.
In observational astronomy, an asterism is a popular known pattern or group of stars that are recognised in the night sky.
An astronomer is a scientist in the field of astronomy who concentrates their studies on a specific question or field outside the scope of Earth.
Baade's Window is an area of the sky with relatively low amounts of interstellar "dust" along the line of sight from the Earth.
Bartholomeus Jan "Bart" Bok (April 28, 1906 – August 5, 1983) was a Dutch-born American astronomer, teacher, and lecturer.
Beta Sagittarii (β Sagittarii, abbreviated Beta Sgr, β Sgr) is the common designation shared by two star systems in the constellation of Sagittarius, themselves designated β1 Sagittarii (itself a probable binary star) and β2 Sagittarii.
In astronomy, Bok globules are isolated and relatively small dark nebulae, containing dense cosmic dust and gas from which star formation may take place.
Nicolas Camille Flammarion FRAS (26 February 1842 – 3 June 1925) was a French astronomer and author.
Capricornus is one of the constellations of the zodiac.
In astronomy and navigation, the celestial sphere is an abstract sphere with an arbitrarily large radius concentric to Earth.
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 is a bright constellation in the southern sky.
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".
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".
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.
Corona Australis is a constellation in the Southern Celestial Hemisphere.
In Greek mythology, Cronus, Cronos, or Kronos (or from Κρόνος, Krónos), was the leader and youngest of the first generation of Titans, the divine descendants of Uranus, the sky, and Gaia, the earth.
A dark nebula or absorption nebula is a type of interstellar cloud that is so dense that it obscures the light from objects behind it, such as background stars and emission or reflection nebulae.
Delta Sagittarii (δ Sagittarii, abbreviated Delta Sgr, δ Sgr), also named Kaus Media, is a double star in the southern zodiac constellation of Sagittarius.
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.
Earth is the third planet from the Sun and the only astronomical object known to harbor life.
Epsilon Sagittarii (ε Sagittarii, abbreviated Epsilon Sgr, ε Sgr), also named Kaus Australis, is a binary star system in the southern zodiac constellation of Sagittarius.
Eratosthenes of Cyrene (Ἐρατοσθένης ὁ Κυρηναῖος,; –) was a Greek mathematician, geographer, poet, astronomer, and music theorist.
Eridu (Sumerian:, NUN.KI/eridugki; Akkadian: irîtu; modern Arabic: Tell Abu Shahrain) is an archaeological site in southern Mesopotamia (modern Dhi Qar Governorate, Iraq).
Eta Sagittarii (Eta Sgr, η Sagittarii, η Sgr) is a binary star system in the southern zodiac constellation of Sagittarius.
The Euphrates (Sumerian: Buranuna; 𒌓𒄒𒉣 Purattu; الفرات al-Furāt; ̇ܦܪܬ Pǝrāt; Եփրատ: Yeprat; פרת Perat; Fırat; Firat) is the longest and one of the most historically important rivers of Western Asia.
The Galactic Center is the rotational center of the Milky Way.
Gamma² Sagittarii (γ² Sagittarii, abbreviated Gamma² Sgr, γ² Sgr), also named Alnasl, is a 3rd-magnitude star in the zodiac constellation of Sagittarius.
George Frederick Chambers (1841–1915) was a barrister, amateur astronomer and author, who wrote a number of popular books about science.
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.
Guillaume Joseph Hyacinthe Jean-Baptiste Le Gentil de la Galaisière (Coutances, 12 September 1725 – Paris, 22 October 1792) was a French astronomer.
Hercules is a constellation named after Hercules, the Roman mythological hero adapted from the Greek hero Heracles.
Indus is a constellation in the southern sky created in the late sixteenth century.
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.
Jean-Philippe Loys de Chéseaux (May 4, 1718 in Lausanne – November 30, 1751) was an astronomer from Lausanne in Switzerland.
John Flamsteed FRS (19 August 1646 – 31 December 1719) was an English astronomer and the first Astronomer Royal.
In Greek mythology, Krotos or Crotus was the son of Pan and Eupheme.
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.
Lambda Sagittarii (λ Sagittarii, abbreviated Lambda Sgr, λ Sgr), also named Kaus Borealis, is a star within the southern constellation of Sagittarius.
Latin (Latin: lingua latīna) is a classical language belonging to the Italic branch of the Indo-European languages.
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.
Messier 22 (also known as M22 or NGC 6656) is an elliptical globular cluster in the constellation Sagittarius, near the Galactic bulge region.
Messier 28 (also known as M28 or NGC 6626) is a globular cluster in the constellation Sagittarius.
Microscopium is a minor constellation in the Southern Celestial Hemisphere, one of twelve created in the 18th century by French astronomer Nicolas Louis de Lacaille and one of several depicting scientific instruments.
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.
The Muses (/ˈmjuːzɪz/; Ancient Greek: Μοῦσαι, Moũsai) are the inspirational goddesses of literature, science, and the arts in Greek mythology.
The National Geographic Society – Palomar Observatory Sky Survey (NGS-POSS) was a major astronomical survey, that took almost 2,000 photographic plates of the night sky.
The National Radio Astronomy Observatory (NRAO) is a Federally Funded Research and Development Center of the United States National Science Foundation operated under cooperative agreement by Associated Universities, Inc for the purpose of radio astronomy.
A nebula (Latin for "cloud" or "fog"; pl. nebulae, nebulæ, or nebulas) is an interstellar cloud of dust, hydrogen, helium and other ionized gases.
Nergal, Nirgal, or Nirgali (Sumerian: dGÌR-UNUG-GAL;; Aramaic ܢܹܪܓܵܐܠ; Nergel) was a deity worshipped throughout Mesopotamia (Akkad, Assyria and Babylonia) with the main seat of his worship at Cuthah represented by the mound of Tell-Ibrahim.
New Horizons is an interplanetary space probe that was launched as a part of NASA's New Frontiers program.
NGC 6440 is a globular cluster in the constellation Sagittarius and was discovered by William Herschel on 28 May 1786.
NGC 6522 is a globular cluster in the constellation Sagittarius.
NGC 6528 is a globular cluster in the constellation Sagittarius, and is listed in the New General Catalogue.
NGC 6559 is a star-forming region located at a distance of about 5000 light-years from Earth, in the constellation of Sagittarius, showing both emission (red) and reflection (bluish) regions.
NGC 6603 is an open cluster discovered by John Herschel on July 15, 1830.
NGC 6638 is a globular cluster in the constellation Sagittarius.
A nova (plural novae or novas) or classical nova (CN, plural CNe) is a transient astronomical event that causes the sudden appearance of a bright, apparently "new" star, that slowly fades over several weeks or many months.
The Omega Nebula, also known as the Swan Nebula, Checkmark Nebula, and the Horseshoe Nebula (catalogued as Messier 17 or M17 or NGC 6618) is an H II region in the constellation Sagittarius.
Ophiuchus is a large constellation straddling the celestial equator.
Orion is a prominent constellation located on the celestial equator and visible throughout the world.
Pabilsaĝ /pabilsaŋ/, in Mesopotamian tradition was a tutelary god of the city of Isin.
In ancient Greek religion and mythology, Pan (Πάν, Pan) is the god of the wild, shepherds and flocks, nature of mountain wilds, rustic music and impromptus, and companion of the nymphs.
Phi Sagittarii (Phi Sgr, φ Sagittarii, φ Sgr) is a star in the southern constellation of Sagittarius.
Philyra or Phillyra (Φιλύρα, "linden-tree") is the name of three distinct characters in Greek mythology.
Pi Sagittarii (π Sagittarii, abbreviated Pi Sgr, π Sgr) is a triple star system in the zodiac constellation of Sagittarius.
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.
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).
A protostar is a very young star that is still gathering mass from its parent molecular cloud.
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.
A Radioisotope Thermoelectric Generator (RTG, RITEG) is an electrical generator that uses an array of thermocouples to convert the heat released by the decay of a suitable radioactive material into electricity by the Seebeck effect.
The Red Spider Nebula (also catalogued as NGC 6537) is a planetary nebula located near the heart of the Milky Way, in the northwest of the constellation Sagittarius.
In astronomy, reflection nebulae are clouds of interstellar dust which might reflect the light of a nearby star or stars.
Rhea (Ῥέα) is a character in Greek mythology, the Titaness daughter of the earth goddess Gaia and the sky god Uranus as well as sister and wife to Cronus.
Ross 154 (V1216 Sgr) is a star in the southern zodiac constellation of Sagittarius.
Sagittarius A or Sgr A is a complex radio source at the center of the Milky Way.
Sagittarius A* (pronounced "Sagittarius A-star", standard abbreviation Sgr A*) is a bright and very compact astronomical radio source at the center of the Milky Way, near the border of the constellations Sagittarius and Scorpius.
The Sagittarius Dwarf Spheroidal Galaxy (Sgr dSph), also known as the Sagittarius Dwarf Elliptical Galaxy (Sgr dE or Sag DEG), is an elliptical loop-shaped satellite galaxy of the Milky Way.
The Sagittarius Star Cloud (also known as Messier 24 and IC 4715) is a star cloud in the constellation of Sagittarius, approximately 600 light years wide, which was discovered by Charles Messier in 1764.
In Greek mythology, a satyr (σάτυρος satyros) is the member of a troop of ithyphallic male companions of Dionysus; they usually have horse-like ears and tails, as well as permanent, exaggerated erections.
Scorpius is one of the constellations of the zodiac.
Scutum is a small constellation introduced in the seventeenth century.
Serpens ("the Serpent", Greek Ὄφις) is a constellation of the northern hemisphere.
Sidereal and tropical are astrological terms used to describe two different definitions of a year.
Sigma Sagittarii (σ Sagittarii, abbreviated Sigma Sgr, σ Sgr), also named Nunki, is the second-brightest star in the constellation of Sagittarius.
The solar mass is a standard unit of mass in astronomy, equal to approximately.
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.
A space probe is a robotic spacecraft that does not orbit the Earth, but, instead, explores further into outer space.
Star clusters are groups of stars.
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.
Tau Sagittarii (Tau Sgr, τ Sagittarii, τ Sgr) is a star in the southern zodiac constellation of Sagittarius.
A teapot is a vessel used for steeping tea leaves or a herbal mix in boiling or near-boiling water, and for serving the resulting infusion which is called tea.
Telescopium is a minor constellation in the southern celestial hemisphere, one of twelve named in the 18th century by French astronomer Nicolas-Louis de Lacaille and one of several depicting scientific instruments.
The Trifid Nebula (catalogued as Messier 20 or M20 and as NGC 6514) is an H II region located in Sagittarius.
Unicode is a computing industry standard for the consistent encoding, representation, and handling of text expressed in most of the world's writing systems.
V4641 Sagittarii (V4641 Sgr) is a variable X-ray binary star system in the constellation Sagittarius.
The Wow! signal was a strong narrowband radio signal received on August 15, 1977, by Ohio State University's Big Ear radio telescope in the United States, then used to support the search for extraterrestrial intelligence.
Zeta Sagittarii (ζ Sagittarii, abbreviated Zeta Sgr, ζ Sgr) is a triple star system and the third-brightest star in the constellation of Sagittarius.
Zeus (Ζεύς, Zeús) is the sky and thunder god in ancient Greek religion, who rules as king of the gods of Mount Olympus.
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 Two Micron All-Sky Survey, or 2MASS, was an astronomical survey of the whole sky in the infrared spectrum and one of the most ambitious such projects.
2MASS-GC02, also known as Hurt 2, is a globular cluster at a distance of about 16 thousand light-years from Earth in the constellation Sagittarius.
The 55th parallel north is a circle of latitude that is 55 degrees north of the Earth's equatorial plane.
In modern astronomy, the sky (celestial sphere) is divided into 88 regions called constellations, generally based on the asterisms (which are also called "constellations") of Greek and Roman mythology.
Constellation Sagittarius, Constellation of Saggitarius, Constellation of Saggittarius, Constellation of Sagittarius, Sagittarius (astronomy), Sagittarius OB1, Sagittarius constellation, Teapot (asterism), Teapot of Sagittarius, ♐ (constellation).