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| Earth | caption = Famous "Blue Marble" photograph of Earth, taken from Apollo 17 Earth
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| European Union/Archive 14 Talk:European_Union/Archive_14
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| Isaac Asimov Talk:Isaac_Asimov
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| Supernova A supernova (plural: supernovae or supernovas) is a stellar explosion. They are extremely luminous and cause a burst of radiation that often briefly outshines an entire galaxy before fading from view over several weeks or months. Supernova
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| Supernova Talk:Supernova
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| Royal Observatory, Greenwich The Royal Observatory, Greenwich (formerly the Royal Greenwich Observatory or RGO) was commissioned in 1675 by King Charles II, with the foundation stone being laid on 10 August. The History Channel: This day in history At this time the king also created the position of Astronomer Royal (initially filled by John Flamsteed), to serve as the director of the observatory and to "apply himself with the most exact care and diligence to the rectifying of the tables of the motions of the heavens, and the places of the fixed stars, so as to find out the so much desired longitude of places for the perfecting of the art of navigation. Royal_Observatory,_Greenwich
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| Guanches Talk:Guanches
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| La Palma | archipelago = Canary Islands La_Palma
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| Gran Telescopio Canarias The Gran Telescopio Canarias (GTC) ("Great Telescope Canary Islands"), sometimes called GranTeCan, is a 10.4 m reflecting telescope and is undertaking commissioning observations at the Observatorio del Roque de los Muchachos on the island of La Palma, Spain. Gran_Telescopio_Canarias
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| Instituto de Astrofísica de Canarias The Instituto de Astrofísica de Canarias is an astrophysical research institute located in Tenerife in the Canary Islands, Spain. It was founded in 1975 at the University of La Laguna. Instituto_de_Astrofísica_de_Canarias
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| Electron-multiplying CCD An electron-multiplying CCD (EMCCD, also known as an L3Vision CCD, L3CCD or Impactron CCD) is a charge-coupled device in which a gain register is placed between the shift register and the output amplifier. The gain register is split up into a large number of stages. Electron-multiplying_CCD
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| List of galaxies This is a list of notable galaxies. List_of_galaxies
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| 67P/Churyumov-Gerasimenko 67P/Churyumov-Gerasimenko is the designation of a comet with a current orbital period of 6.6 years. 67P/Churyumov-Gerasimenko
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| Lucky imaging Lucky imaging (also called lucky exposures) is one form of speckle imaging used for astronomical photography. Speckle imaging techniques use a high-speed camera with exposure times short enough (100 ms or less) so that the changes in the Earth's atmosphere during the exposure are minimal. Lucky_imaging
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| Nordic Optical Telescope The Nordic Optical Telescope (NOT) is an astronomical telescope located at Roque de los Muchachos Observatory, La Palma in the Canary Islands. First light came in 1988, with regular observing beginning in 1989. Nordic_Optical_Telescope
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| Telescopio Nazionale Galileo The Telescopio Nazionale Galileo, or TNG, is a 3.58m telescope located on the island of San Miguel de La Palma (or, more simply, La Palma), in the Canary Islands archipelago. Telescopio_Nazionale_Galileo
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| MAGIC (telescope) MAGIC (Major Atmospheric Gamma-ray Imaging Cherenkov Telescope) is a Gamma-ray telescope situated at the Roque de los Muchachos Observatory on La Palma, one of the Canary Islands, at about 2200 m above sea level. It detects particle showers released by cosmic gamma-rays, using the Cherenkov radiation, i. MAGIC_(telescope)
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| Isaac Newton Group of Telescopes The Isaac Newton Group of Telescopes or ING operates the William Herschel Telescope, Isaac Newton Telescope and Jacobus Kapteyn Telescope optical telescopes for the Science and Technology Facilities Council (STFC), the NWO and the IAC. The telescopes are located at Roque de los Muchachos Observatory on La Palma in the Canary Islands. Isaac_Newton_Group_of_Telescopes
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| Moons of Saturn Talk:Moons_of_Saturn
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| William Herschel Telescope The William Herschel Telescope or WHT was first conceived in the late 1960s, when the Anglo-Australian Observatory was being designed. The British astronomical community saw the need for telescopes of comparable power in the Northern Hemisphere. William_Herschel_Telescope
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