174 relations: Ab-o-Atash Park, Abu Simbel, Airborne observatory, Altitude, Andes, Angkor Wat, Angular resolution, Aperture, Arecibo Observatory, Arkaim, Armagh Observatory, Astronomical Observatory of Capodimonte, Astronomical Observatory of Trieste, Astronomical seeing, Astronomy, Atacama Desert, Atacama Large Millimeter Array, Atmosphere of Earth, Azerbaijan (Iran), Śaṅkaranārāyaṇa, Baghdad, BBC, Beijing Ancient Observatory, Berlin Observatory, Brera Astronomical Observatory, Canary Islands, Celestial event, Chanquillo, Cheomseongdae, Chichen Itza, Chile, Cincinnati Observatory, Climatology, Constantinople Observatory of Taqi ad-Din, Continuum International Publishing Group, Dome, Dunsink Observatory, Electromagnetic interference, Electromagnetic spectrum, Encyclopedia of the History of Arabic Science, Equator, Equatorial room, Estonia, Fundamental station, Gamma ray, Gaocheng Astronomical Observatory, Gemini Observatory, Geophysics, Goseck circle, Ground station, ..., Harvard College Observatory, Hawaii, Hawaiian Volcano Observatory, High-altitude balloon, Hipparchus, Hopkins Observatory, Hubble Space Telescope, Infrared, Isis (journal), Jaipur, Jantar Mantar, Jantar Mantar, Jaipur, Jodrell Bank Observatory, Johan Maurits Mohr, Karahunj, Kerala, Kitt Peak National Observatory, Kodaikanal Solar Observatory, Kokino, Kuiper Airborne Observatory, Kumanovo, Leiden Observatory, Lick Observatory, Light pollution, List of astronomical observatories, List of largest optical reflecting telescopes, List of observatory codes, List of telescope parts and construction, Llano de Chajnantor Observatory, Lomnický štít, Loomis Observatory, Loughcrew, Lowell Observatory, Macfarlane Observatory, Madras Observatory, Maragheh, Maragheh observatory, Mauna Kea Observatories, McCormick Observatory, Meteorology, Mexico, New Mexico, New South Wales, Newgrange, Nicholas I of Russia, Observation post, Observatory of Turin, Observatory Street, Oceanography, Opacity (optics), Optical telescope, Orbit, Otto Sibum, Outer space, Panzano Observatory, Paranal Observatory, Paris Observatory, Parkes Observatory, Prentice Hall, Puerto Rico, Pulkovo Observatory, Quito, Quito Astronomical Observatory, Radar, Radio, Radio astronomy, Radio frequency, Radio telescope, Research institute, Ridge A, Roque de los Muchachos Observatory, Routledge, Royal Observatory, Greenwich, Rundetaarn, Samarkand, Serge Brunier, Sextant (astronomical), Sierra Negra, Smithsonian Astrophysical Observatory, Southwestern United States, Space Shuttle, Space telescope, Star, Steven J. Dick, Stjerneborg, Stockholm Observatory, Stonehenge, Stratospheric Observatory for Infrared Astronomy, Struve Geodetic Arc, Sukharev Tower, Sydney, Sydney Observatory, Tartu Observatory, Tehran, Telescope, Television, Timeline of telescopes, observatories, and observing technology, Turbulence, Ujjain, Ultraviolet, Ulugh Beg Observatory, United Kingdom, United States Geological Survey, United States Naval Observatory, University of Tokyo Atacama Observatory, Uraniborg, Valley, Vatican Observatory, Very Large Array, Very Large Telescope, Vesuvius Observatory, Vilnius University Astronomical Observatory, Visible-light astronomy, Volcano, Volcano observatory, Volcanology, W. Patrick McCray, Water vapor, Weather forecasting, Western Reserve Academy, X-ray, Yale University Observatory, Yerkes Observatory, Zorats Karer. Expand index (124 more) » « Shrink index
Ab-o-Atash Park (پارکِ آب و آتش., Pārk-e Āb-o-Ātaš), literally the "Water-and-Fire Park", also known as the Ebrahim Park (پارکِ ابراهیم, Pārk-e Ebrāhim), is a park in northern Tehran, Iran.
Abu Simbel (أبو سمبل) is a village of about 2600 inhabitants in Nubia, southern Egypt, near the border with Sudan.
An airborne observatory is an airplane, airship, or balloon with an astronomical telescope.
Altitude or height (sometimes known as depth) is defined based on the context in which it is used (aviation, geometry, geographical survey, sport, atmospheric pressure, and many more).
The Andes or Andean Mountains (Cordillera de los Andes) are the longest continental mountain range in the world.
Angkor Wat (អង្គរវត្ត, "Capital Temple") is a temple complex in Cambodia and the largest religious monument in the world, on a site measuring.
Angular resolution or spatial resolution describes the ability of any image-forming device such as an optical or radio telescope, a microscope, a camera, or an eye, to distinguish small details of an object, thereby making it a major determinant of image resolution.
In optics, an aperture is a hole or an opening through which light travels.
The Arecibo Observatory is a radio telescope in the municipality of Arecibo, Puerto Rico.
Arkaim (Аркаим) is an archaeological site in Russia, situated in the steppe of the Southern Ural, north-to-northwest of the village of Amursky and south-to-southeast of the village of Alexandrovsky in the Chelyabinsk Oblast of Russia, just north of the border with Kazakhstan.
Armagh Observatory is an astronomical research institute in Armagh, Northern Ireland.
The Astronomical Observatory of Capodimonte (italic) is the Neapolitan department of Istituto Nazionale di Astrofisica (National Institute for Astrophysics, INAF), the most important Italian institution promoting, developing and conducting scientific research in the fields of astronomy, astrophysics, and space science.
Astronomical Observatory of Trieste (Osservatorio Astronomico di Trieste or OAT) is an astronomical center of studies located in the city of Trieste in northern Italy.
Astronomical seeing is the blurring and twinkling of astronomical objects like stars due to turbulent mixing in the Earth's atmosphere, causing variations of the optical refractive index.
Astronomy (from ἀστρονομία) is a natural science that studies celestial objects and phenomena.
The Atacama Desert (Desierto de Atacama) is a plateau in South America (primarily in Chile), covering a 1000-km (600-mi) strip of land on the Pacific coast, west of the Andes mountains.
The Atacama Large Millimeter/submillimeter Array (ALMA) is an astronomical interferometer of radio telescopes in the Atacama Desert of northern Chile.
The atmosphere of Earth is the layer of gases, commonly known as air, that surrounds the planet Earth and is retained by Earth's gravity.
Azerbaijan or Azarbaijan (آذربایجان Āzarbāijān; آذربایجان Azərbaycan), also known as Iranian Azerbaijan, is a historical region in northwestern Iran that borders Iraq, Turkey, the Nakhchivan Autonomous Republic, Armenia, and the Republic of Azerbaijan.
Śaṅkaranārāyaṇa (c. 840 – c. 900) was an Indian astronomer and mathematician in the court of Sthanu Ravi Kulasekhara (844—883 AD) of the Chera Perumal Kingdom of Makotai in Kerala.
Baghdad (بغداد) is the capital of Iraq.
The British Broadcasting Corporation (BBC) is a British public service broadcaster.
The Beijing Ancient Observatory is a pretelescopic observatory located in Beijing, China.
The Berlin Observatory (Berliner Sternwarte) is a German astronomical institution with a series of observatories and related organizations in and around the city of Berlin in Germany, starting from the 18th century.
The Brera Observatory (Osservatorio Astronomico di Brera) is an astronomical observatory in the Brera district of Milan, Italy.
The Canary Islands (Islas Canarias) is a Spanish archipelago and autonomous community of Spain located in the Atlantic Ocean, west of Morocco at the closest point.
A celestial event is an astronomical phenomenon of interest that involves one or more celestial objects.
Chanquillo or Chankillo is an ancient monumental complex in the Peruvian coastal desert, found in the Casma-Sechin basin in the Ancash Department of Peru.
Cheomseongdae (Hangul: 첨성대) is an astronomical observatory in Gyeongju, South Korea.
Chichen Itza, Chichén Itzá, often with the emphasis reversed in English to; from Chi'ch'èen Ìitsha' (Barrera Vásquez et al., 1980.) "at the mouth of the well of the Itza people" was a large pre-Columbian city built by the Maya people of the Terminal Classic period.
Chile, officially the Republic of Chile, is a South American country occupying a long, narrow strip of land between the Andes to the east and the Pacific Ocean to the west.
The Cincinnati Observatory is located in Cincinnati, Ohio (United States) on top of Hyde Park.
Climatology (from Greek κλίμα, klima, "place, zone"; and -λογία, -logia) or climate science is the scientific study of climate, scientifically defined as weather conditions averaged over a period of time.
The Constantinople observatory of Taqi ad-Din, founded in Constantinople (today Istanbul) by Taqi ad-Din Muhammad ibn Ma'ruf in 1577, was one of the largest astronomical observatories to be built in the Islamic world.
Continuum International Publishing Group was an academic publisher of books with editorial offices in London and New York City.
Interior view upward to the Byzantine domes and semi-domes of Hagia Sophia. See Commons file for annotations. A dome (from Latin: domus) is an architectural element that resembles the hollow upper half of a sphere.
The Dunsink Observatory is an astronomical observatory established in 1785 in the townland of Dunsink near the city of Dublin, Ireland.
Electromagnetic interference (EMI), also called radio-frequency interference (RFI) when in the radio frequency spectrum, is a disturbance generated by an external source that affects an electrical circuit by electromagnetic induction, electrostatic coupling, or conduction.
The electromagnetic spectrum is the range of frequencies (the spectrum) of electromagnetic radiation and their respective wavelengths and photon energies.
The Encyclopedia of the History of Arabic Science is a three-volume encyclopedia covering the history of Arabic contributions to science, mathematics and technology which had a marked influence on the Middle Ages in Europe.
An equator of a rotating spheroid (such as a planet) is its zeroth circle of latitude (parallel).
An equatorial room, in astronomical observatories, is the room which contains an equatorial mounted telescope.
Estonia (Eesti), officially the Republic of Estonia (Eesti Vabariik), is a sovereign state in Northern Europe.
A fundamental point (in German Fundamentalpunkt) is the geometric origin of a geodetic network and defines the geodetic datum of a national survey.
A gamma ray or gamma radiation (symbol γ or \gamma), is penetrating electromagnetic radiation arising from the radioactive decay of atomic nuclei.
Gaocheng Astronomical Observatory, also known as the Dengfeng Observatory, is a World Heritage Site in Duke of Zhou's shrine, Gaocheng Town, near Dengfeng in Henan province, China.
The Gemini Observatory is an astronomical observatory consisting of two 8.19-metre (26.9 ft) telescopes, Gemini North and Gemini South, which are located at two separate sites in Hawaii and Chile, respectively.
Geophysics is a subject of natural science concerned with the physical processes and physical properties of the Earth and its surrounding space environment, and the use of quantitative methods for their analysis.
The Goseck circle (German: Sonnenobservatorium Goseck) is a Neolithic structure in Goseck in the Burgenlandkreis district in Saxony-Anhalt, Germany.
A ground station, earth station, or earth terminal is a terrestrial radio station designed for extraplanetary telecommunication with spacecraft (constituting part of the ground segment of the spacecraft system), or reception of radio waves from astronomical radio sources.
The Harvard College Observatory (HCO) is an institution managing a complex of buildings and multiple instruments used for astronomical research by the Harvard University Department of Astronomy.
Hawaii (Hawaii) is the 50th and most recent state to have joined the United States, having received statehood on August 21, 1959.
The Hawaiian Volcano Observatory (HVO) is a volcano observatory located at Uwekahuna Bluff on the rim of Kīlauea Caldera on the Island of Hawaiokinai.
High-altitude balloons are manned or unmanned balloons, usually filled with helium or hydrogen and rarely methane, that are released into the stratosphere, generally attaining between.
Hipparchus of Nicaea (Ἵππαρχος, Hipparkhos) was a Greek astronomer, geographer, and mathematician.
Hopkins Observatory is an astronomical observatory owned and operated by Williams College in Williamstown, Massachusetts (USA).
The Hubble Space Telescope (HST) is a space telescope that was launched into low Earth orbit in 1990 and remains in operation.
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.
Isis is a quarterly peer-reviewed academic journal published by the University of Chicago Press.
Jaipur is the capital and the largest city of the Indian state of Rajasthan in Northern India.
The Jantar Mantar is an equinoctial sundial, consisting a gigantic triangular gnomon with the hypotenuse parallel to the Earth's axis.
The Jantar Mantar monument in Jaipur, Rajasthan is a collection of nineteen architectural astronomical instruments built by the Rajput king Sawai Jai Singh II, and completed in 1734.
The Jodrell Bank Observatory (originally the Jodrell Bank Experimental Station, then the Nuffield Radio Astronomy Laboratories from 1966 to 1999) is a British observatory that hosts a number of radio telescopes, and is part of the Jodrell Bank Centre for Astrophysics at the University of Manchester.
Dutch East Indies). Johan Maurits Mohr (ca. 18 August 1716, Eppingen – 25 October 1775, Batavia) was a Dutch-German pastor who studied at Groningen University from 1733 and settled in Batavia (Dutch East Indies) in 1737.
Karahunj (Քարահունջ; also Romanized as K’arahunj, Karaundzh, and Karahundj) is a village and rural community (municipality) in Armenia in Syunik province known for archaeological site Zorats Karer, located 4 km south of the city of Goris.
Kerala is a state in South India on the Malabar Coast.
The Kitt Peak National Observatory (KPNO) is a United States astronomical observatory located on Kitt Peak of the Quinlan Mountains in the Arizona-Sonoran Desert on the Tohono O'odham Nation, west-southwest of Tucson, Arizona.
The Kodaikanal Solar Observatory is a solar observatory owned and operated by the Indian Institute of Astrophysics.
Kokino (Кокино) is a Bronze Age archaeological site in the Republic of Macedonia, approximately 30 km from the town of Kumanovo, and about 6 km from the Serbian border, in the Staro Nagoričane municipality.
The Gerard P. Kuiper Airborne Observatory (KAO) was a national facility operated by NASA to support research in infrared astronomy.
Kumanovo (Куманово; also known by other alternative names) is a city in the Republic of Macedonia and is the seat of Kumanovo Municipality, the largest municipality in the country.
Leiden Observatory (Sterrewacht Leiden in Dutch) is an astronomical observatory in the city of Leiden, the Netherlands.
The Lick Observatory is an astronomical observatory, owned and operated by the University of California.
Light pollution, also known as photopollution, is the presence of anthropogenic light in the night environment.
This is a list of astronomical observatories ordered by name, along with initial dates of operation (where an accurate date is available) and location.
This list of the largest optical reflecting telescopes with objective diameters of or greater is sorted by aperture, which is one limit on the light-gathering power and resolution of a reflecting telescope's optical assembly.
This is a list of observatory codes, or IAU codes, with their corresponding astronomical observatories.
Llano de Chajnantor Observatory is the name for a group of astronomical observatories located at an altitude of over in the Atacama Desert of northern Chile.
Lomnický štít (Lomnica Peak or Lomnický Peak Lomnici-csúcs) is one of the highest and most visited mountain peaks in the High Tatras mountains of Slovakia.
Loomis Observatory (also known as the Elias Loomis Observatory) is the second oldest observatory in the United States, located in Hudson, Ohio.
Loughcrew or Lough Crew is an area of great historical importance near Oldcastle, County Meath, Ireland.
Lowell Observatory is an astronomical observatory in Flagstaff, Arizona, United States.
At Glasgow University, the Macfarlane Observatory was established in 1757 with instruments donated by Alexander Macfarlane, a merchant in Jamaica.
The Madras Observatory was an astronomical observatory which had its origins in a private observatory set up by William Petrie in 1786 and later moved and managed by the British East India Company from 1792 in Madras (now known as Chennai).
Maragheh (مراغه, date), also Romanized as Marāgheh; also known as Marāgha), is an ancient city and capital of Maragheh County, East Azerbaijan Province, Iran. Maragheh is on the bank of the river Sufi Chay. The population consists mostly of Iranian Azerbaijanis who speak the Azerbaijani language. It is from Tabriz, the largest city in Iranian Azerbaijan.
Maragheh observatory (رصدخانه مراغه), was an institutionalized astronomical observatory which was established in 1259 CE under the patronage of the Ilkhanid Hulagu and the directorship of Nasir al-Din al-Tusi, a Persian scientist and astronomer.
The Mauna Kea Observatories (MKO) are a number of independent astronomical research facilities and large telescope observatories that are located at the summit of Mauna Kea on the Big Island of Hawaiʻi, United States.
The Leander McCormick Observatory is one of the astronomical observatories operated by the Department of Astronomy of the University of Virginia and is situated just outside Charlottesville, Virginia (US) in Albemarle County on the summit of Mount Jefferson (also known as Observatory Hill).
Meteorology is a branch of the atmospheric sciences which includes atmospheric chemistry and atmospheric physics, with a major focus on weather forecasting.
Mexico (México; Mēxihco), officially called the United Mexican States (Estados Unidos Mexicanos) is a federal republic in the southern portion of North America.
New Mexico (Nuevo México, Yootó Hahoodzo) is a state in the Southwestern Region of the United States of America.
New South Wales (abbreviated as NSW) is a state on the east coast of:Australia.
Newgrange (Sí an Bhrú or Brú na Bóinne) is a prehistoric monument in County Meath, Ireland, located west of Drogheda on the north side of the River Boyne.
Nicholas I (r; –) was the Emperor of Russia from 1825 until 1855.
An observation post (commonly abbreviated OP), temporary or fixed, is a position from which soldiers can watch enemy movements, to warn of approaching soldiers (such as in trench warfare), or to direct artillery fire.
The Observatory of Turin (Osservatorio Astronomico di Torino, also known as Pino Torinese; obs. code: 022) is an astronomical observatory owned and operated by Italy's National Institute for Astrophysics (Istituto Nazionale di Astrofisica, INAF).
Observatory Street links at the eastern end Woodstock Road (opposite Bevington Road and St Anne's College and nearly opposite St Antony's College) in central North Oxford and at the western end Walton Street and the Jericho area of Oxford, England.
Oceanography (compound of the Greek words ὠκεανός meaning "ocean" and γράφω meaning "write"), also known as oceanology, is the study of the physical and biological aspects of the ocean.
Opacity is the measure of impenetrability to electromagnetic or other kinds of radiation, especially visible light.
An optical telescope is a telescope that gathers and focuses light, mainly from the visible part of the electromagnetic spectrum, to create a magnified image for direct view, or to make a photograph, or to collect data through electronic image sensors.
In physics, an orbit is the gravitationally curved trajectory of an object, such as the trajectory of a planet around a star or a natural satellite around a planet.
Heinz Otto Sibum (born 1956) is a German historian of science, Hans Rausing Professor and Director of the Office for History of Science at the University of Uppsala.
Outer space, or just space, is the expanse that exists beyond the Earth and between celestial bodies.
The Panzano Observatory was an observatory in the village of about to the NNW of the centre of the comune of Castelfranco Emilia, near Bologna, Italy, where Giovanni Cassini worked.
Paranal Observatory is an astronomical observatory operated by the European Southern Observatory (ESO); it is located in the Atacama Desert of northern Chile on Cerro Paranal at altitude, south of Antofagasta.
The Paris Observatory (Observatoire de Paris or Observatoire de Paris-Meudon), a research institution of PSL Research University, is the foremost astronomical observatory of France, and one of the largest astronomical centres in the world.
The Parkes Observatory (also known informally as "The Dish") is a radio telescope observatory, located 20 kilometres north of the town of Parkes, New South Wales, Australia.
Prentice Hall is a major educational publisher owned by Pearson plc.
Puerto Rico (Spanish for "Rich Port"), officially the Commonwealth of Puerto Rico (Estado Libre Asociado de Puerto Rico, "Free Associated State of Puerto Rico") and briefly called Porto Rico, is an unincorporated territory of the United States located in the northeast Caribbean Sea.
The Pulkovo Astronomical Observatory (Пу́лковская астрономи́ческая обсервато́рия, official name The Central Astronomical Observatory of the Russian Academy of Sciences at Pulkovo, Гла́вная (Пу́лковская) астрономи́ческая обсервато́рия Росси́йской акаде́мии нау́к; formerly Imperial Observatory at Pulkowo), the principal astronomical observatory of the Russian Academy of Sciences, located 19 km south of Saint Petersburg on Pulkovo Heights above sea level.
Quito (Kitu; Kitu), formally San Francisco de Quito, is the capital city of Ecuador, and at an elevation of above sea level, it is the second-highest official capital city in the world, after La Paz, and the one which is closest to the equator.
The Quito Astronomical Observatory (Observatorio Astronómico de Quito – OAQ) is a research institute of EPN, the National Polytechnic School in Quito, Ecuador.
Radar is an object-detection system that uses radio waves to determine the range, angle, or velocity of objects.
Radio is the technology of using radio waves to carry information, such as sound, by systematically modulating properties of electromagnetic energy waves transmitted through space, such as their amplitude, frequency, phase, or pulse width.
Radio astronomy is a subfield of astronomy that studies celestial objects at radio frequencies.
Radio frequency (RF) refers to oscillatory change in voltage or current in a circuit, waveguide or transmission line in the range extending from around twenty thousand times per second to around three hundred billion times per second, roughly between the upper limit of audio and the lower limit of infrared.
A radio telescope is a specialized antenna and radio receiver used to receive radio waves from astronomical radio sources in the sky in radio astronomy.
A research institute or research center is an establishment founded for doing research.
Ridge A is a site in Antarctica that was identified in 2009 as the best suited location on the surface of Earth for astronomical research.
Roque de los Muchachos Observatory (Spanish: Observatorio del Roque de los Muchachos, ORM) is an astronomical observatory located in the municipality of Garafía on the island of La Palma in the Canary Islands.
Routledge is a British multinational publisher.
The Royal Observatory, Greenwich (ROG; known as the Old Royal Observatory from 1957 to 1998, when the working Royal Greenwich Observatory, RGO, moved from Greenwich to Herstmonceux) is an observatory situated on a hill in Greenwich Park, overlooking the River Thames.
The Rundetaarn, or Rundetårn (Round Tower in English), is a 17th-century tower located in central Copenhagen, Denmark.
Samarkand (Uzbek language Uzbek alphabet: Samarqand; سمرقند; Самарканд; Σαμαρκάνδη), alternatively Samarqand, is a city in modern-day Uzbekistan and is one of the oldest continuously inhabited cities in Central Asia.
Serge Brunier (born 1958 in Paris) is a French photographer, reporter, and writer who has specialized in popular depictions of astronomical subjects.
Sextants for astronomical observations were devices depicting a sixth of a circle, used primarily for measuring the positions of stars.
Sierra Negra (also, and perhaps more properly, Cerro La Negra) is an extinct volcano located in the Mexican state of Puebla, close to the border with Veracruz.
The Smithsonian Astrophysical Observatory (SAO) is a research institute of the Smithsonian Institution headquartered in Cambridge, Massachusetts, where it is joined with the Harvard College Observatory (HCO) to form the Harvard–Smithsonian Center for Astrophysics (CfA).
The Southwestern United States (Suroeste de Estados Unidos; also known as the American Southwest) is the informal name for a region of the western United States.
The Space Shuttle was a partially reusable low Earth orbital spacecraft system operated by the U.S. National Aeronautics and Space Administration (NASA), as part of the Space Shuttle program.
A space telescope or space observatory is an instrument located in outer space to observe distant planets, galaxies and other astronomical objects.
A star is type of astronomical object consisting of a luminous spheroid of plasma held together by its own gravity.
Steven J. Dick (born October 24, 1949, Evansville, Indiana) is an American astronomer, author, and historian of science most noted for his work in the field of astrobiology.
Stjerneborg ("Star Castle" in English) was Tycho Brahe's underground observatory next to his palace-observatory Uraniborg, located on the island of Hven in Øresund.
The Stockholm Observatory (Stockholms observatorium, 050) is an astronomical observatory and institution in Stockholm, Sweden, founded in the 18th century and today part of Stockholm University.
Stonehenge is a prehistoric monument in Wiltshire, England, west of Amesbury.
The Stratospheric Observatory for Infrared Astronomy (SOFIA) is an 80/20 joint project of NASA and the German Aerospace Center (DLR) to construct and maintain an airborne observatory.
The Struve Geodetic Arc is a chain of survey triangulations stretching from Hammerfest in Norway to the Black Sea, through ten countries and over 2,820 km, which yielded the first accurate measurement of a meridian.
The Sukharev Tower (Сухарева башня) was a Moscow landmark until its destruction by the Soviet authorities in 1934.
Sydney is the state capital of New South Wales and the most populous city in Australia and Oceania.
Sydney Observatory is located on a hill now known as Observatory Hill in the centre of Sydney.
The Tartu Observatory (Tartu Observatoorium) is the largest astronomical observatory in Estonia.
Tehran (تهران) is the capital of Iran and Tehran Province.
A telescope is an optical instrument that aids in the observation of remote objects by collecting electromagnetic radiation (such as visible light).
Television (TV) is a telecommunication medium used for transmitting moving images in monochrome (black and white), or in colour, and in two or three dimensions and sound.
Timeline of telescopes, observatories, and observing technology.
In fluid dynamics, turbulence or turbulent flow is any pattern of fluid motion characterized by chaotic changes in pressure and flow velocity.
Ujjain is the largest city in Ujjain district of the Indian state of Madhya Pradesh.
Ultraviolet (UV) is electromagnetic radiation with a wavelength from 10 nm to 400 nm, shorter than that of visible light but longer than X-rays.
The Ulugh Beg Observatory is an observatory in Samarkand, Uzbekistan.
The United Kingdom of Great Britain and Northern Ireland, commonly known as the United Kingdom (UK) or Britain,Usage is mixed with some organisations, including the and preferring to use Britain as shorthand for Great Britain is a sovereign country in western Europe.
The United States Geological Survey (USGS, formerly simply Geological Survey) is a scientific agency of the United States government.
The United States Naval Observatory (USNO) is one of the oldest scientific agencies in the United States, with a primary mission to produce Positioning, Navigation and Timing (PNT) for the United States Navy and the United States Department of Defense.
The University of Tokyo Atacama Observatory (TAO) is an astronomical observatory located on the summit of Cerro Chajnantor, at an altitude of within a lava dome in the Atacama Desert of northern Chile.
Uraniborg (Uranienborg, Uraniborg) was a Danish astronomical observatory and alchemical laboratory established and operated by Tycho Brahe.
A valley is a low area between hills or mountains often with a river running through it.
The Vatican Observatory (Specola Vaticana) is an astronomical research and educational institution supported by the Holy See.
The Karl G. Jansky Very Large Array (VLA) is a centimeter-wavelength radio astronomy observatory located in central New Mexico on the Plains of San Agustin, between the towns of Magdalena and Datil, ~50 miles (80 km) west of Socorro.
The Very Large Telescope (VLT) is a telescope facility operated by the European Southern Observatory on Cerro Paranal in the Atacama Desert of northern Chile.
The Vesuvius Observatory (Osservatorio Vesuviano) is the surveillance centre for monitoring the three volcanoes which threaten the Campanian region of Italy: Mount Vesuvius, Campi Flegrei and Ischia.
Vilnius University Astronomical Observatory is an astronomical observatory of Vilnius University.
Visible-light astronomy encompasses a wide variety of observations via telescopes that are sensitive in the range of visible light (optical telescopes).
A volcano is a rupture in the crust of a planetary-mass object, such as Earth, that allows hot lava, volcanic ash, and gases to escape from a magma chamber below the surface.
A volcano observatory is an institution that conducts research and monitoring of a volcano.
Volcanology (also spelled vulcanology) is the study of volcanoes, lava, magma, and related geological, geophysical and geochemical phenomena.
Weather forecasting is the application of science and technology to predict the conditions of the atmosphere for a given location and time.
Western Reserve Academy (WRA or simply Reserve) is a private, midsized, coeducational boarding and day college preparatory school located in Hudson, Ohio.
X-rays make up X-radiation, a form of electromagnetic radiation.
The Yale University Observatory, also known as the Leitner Family Observatory and Planetarium, is an astronomical observatory owned and operated by Yale University, and maintained for student use.
Yerkes Observatory is an astronomical observatory in Williams Bay, Wisconsin operated by the University of Chicago Department of Astronomy and Astrophysics.
Zorats Karer (Զորաց Քարեր, locally Դիք-դիք քարեր Dik-dik karer), also called Karahunj, Qarahunj or Carahunge and Carenish (Քարահունջ և Քարենիշ) is a prehistoric archaeological site near the town of Sisian in the Syunik Province of Armenia.
Astronomical Observatory, Astronomical observatories, Astronomical observatories by country, Astronomical observatories in Washington, D.C., Astronomical observatories in the United States, Astronomical observatory, Observatories, Observatorio tecnológico, Telescope dome, Weather observation station.