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WASP-121
WASP-121, also known as CD-38 3220 and formally named Dilmun, is a magnitude 10.4 star located approximately away in the constellation Puppis. WASP-121 has a mass and radius similar to the Sun's. It hosts one known exoplanet. The star, although metal-rich in terms of overall contents of heavy elements, is depleted of carbon. The carbon to oxygen molar ratio of 0.23 for WASP-121 is well below the solar ratio of 0.55. Nomenclature The designation ''WASP-121'' indicates that this was the 121st star found to have a planet by the Wide Angle Search for Planets. In August 2022, this planetary system was included among 20 systems to be named by the third NameExoWorlds project. The approved names, proposed by a team from Bahrain, were announced in June 2023. WASP-121 is named Dilmun after the ancient civilization, and its planet is named Tylos after the ancient Greek name for Bahrain. Planetary system In 2015, the exoplanet WASP-121b was discovered orbiting WASP-121 by t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
WASP-121b
WASP-121b, formally named Tylos, is an exoplanet orbiting the star WASP-121. WASP-121b is the first exoplanet found with an extrasolar planetary stratosphere (an atmosphere, atmospheric layer in which temperatures increase as the altitude increases) and the first that contains water. WASP-121b is in the constellation Puppis, and is about 858 light-years from Earth. Nomenclature In August 2022, this planet and its host star were included among 20 systems to be named by the third NameExoWorlds project. The approved names, proposed by a team from Bahrain, were announced in June 2023. WASP-121b is named Tylos after the Tylos, ancient Greek name for Bahrain, and its host star is named WASP-121, Dilmun after the Dilmun, ancient civilization. Characteristics WASP-121b is an ultra-hot Jupiter exoplanet with a mass about 1.16 times that of Jupiter and a radius about 1.75 times that of Jupiter. The exoplanet orbits WASP-121, its host star, every 1.27 days. In 2019 a work by Hellard ''e ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Exoplanet Firsts
This is a list of exoplanet discoveries that were the first by several criteria, including: * the detection method used, * the planet type, * the planetary system type, * the star type, and others. The first The choice of "first" depends on definition and confirmation, as below. The three systems detected prior to 1994 each have a drawback, with Gamma Cephei b being unconfirmed until 2002; while the PSR B1257+12 planets orbit a pulsar. This leaves 51 Pegasi b (discovered and confirmed 1995) as the first confirmed exoplanet around a non-compact star. By discovery method By detection method Some of these planets had already been discovered by another method but were the first to be detected by the listed method. By system type By star type By planet type Other See also * Lists of exoplanets * List of exoplanet extremes * Methods of detecting exoplanets Methods of detecting exoplanets usually rely on indirect strategies – that is, they do not directly Astr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
SuperWASP
WASP or Wide Angle Search for Planets is an international consortium of several academic organisations performing an ultra-wide angle search for exoplanets using transit photometry. The array of robotic telescopes aims to survey the entire sky, simultaneously monitoring many thousands of stars at an apparent visual magnitude from about 7 to 13. WASP is the detection program composed of the Isaac Newton Group, IAC and six universities from the United Kingdom. The two continuously operating, robotic observatories cover the Northern and Southern Hemisphere, respectively. SuperWASP-North is at Roque de los Muchachos Observatory on the mountain of that name which dominates La Palma in the Canary Islands. WASP-South is at the South African Astronomical Observatory, Sutherland in the arid Roggeveld Mountains of South Africa. These use eight wide-angle cameras that simultaneously monitor the sky for planetary transit events and allow the monitoring of millions of stars simultaneous ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Exoplanets Discovered In 2015 ...
This is a List of exoplanets discovered in 2015. For exoplanets detected only by radial velocity, the mass value is actually a lower limit. (See Minimum mass for more information) Specific exoplanet lists References {{Exoplanet 2015 * exoplanets An exoplanet or extrasolar planet is a planet outside the Solar System. The first confirmed detection of an exoplanet was in 1992 around a pulsar, and the first detection around a main-sequence star was in 1995. A different planet, first detec ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wide Angle Search For Planets
WASP or Wide Angle Search for Planets is an international consortium of several academic organisations performing an ultra-wide angle search for exoplanets using transit photometry. The array of robotic telescopes aims to Astronomical survey, survey the entire sky, simultaneously monitoring many thousands of stars at an apparent visual magnitude from about 7 to 13. WASP is the detection program composed of the Isaac Newton Group, Instituto de Astrofísica de Canarias, IAC and six universities from the United Kingdom. The two continuously operating, robotic observatories cover the Northern and Southern Hemisphere, respectively. SuperWASP-North is at Roque de los Muchachos Observatory on the mountain of that name which dominates La Palma in the Canary Islands. WASP-South is at the South African Astronomical Observatory, Sutherland, South Africa, Sutherland in the arid Roggeveld Mountains of South Africa. These use eight wide-angle cameras that simultaneously monitor the sky for pl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
WASP-33b
WASP-33b is an extrasolar planet orbiting the star HD 15082. It was the first planet discovered to orbit a Delta Scuti variable star. With a semimajor axis of and a mass likely greater than Jupiter's, it belongs to the hot Jupiter class of planets. Discovery In 2010, the SuperWASP project announced the discovery of an extrasolar planet orbiting the star HD 15082. The discovery was made by detecting the transit of the planet as it passes in front of its star, an event that occurs every 1.22 days. Orbit A study in 2012, utilizing the Rossiter–McLaughlin effect, determined the planetary orbit is strongly misaligned with the equatorial plane of the star, misalignment equal to −107.7°, making the orbit of WASP-33b retrograde. The periastron node is precessing with a period of 709 years. Physical characteristics Limits from radial velocity measurements imply it has less than 4.1 times the mass of Jupiter. The exoplanet orbits so close to its star that its surface temperat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dilmun
Dilmun, or Telmun, ( Sumerian: ,Transliteration: Similar text: later 𒉌𒌇(𒆠), NI.TUKki = dilmunki; ) was an ancient East Semitic–speaking civilization in Eastern Arabia mentioned from the 3rd millennium BC onwards. Based on contextual evidence, it was located in the Persian Gulf, on a trade route between Mesopotamia and the Indus Valley civilisation, close to the sea and to artesian springs. Dilmun encompassed Bahrain, Kuwait,Archived aGhostarchiveand thWayback Machine and eastern Saudi Arabia. The great commercial and trading connections between Mesopotamia and Dilmun were strong and profound to the point where Dilmun was a central figure to the Sumerian creation myth.The Arab world: an illustrated history p.4 Dilmun was described in the saga of Enki and Ninhursag as pre-existing in paradisiacal state, where predators do not kill, pain and diseases are absent, and people do not get old. Dilmun was an important trading centre. At the height of its power, it controll ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tylos
Tylos () was the Greek exonym of ancient Bahrain in the classical era, during which the island was a center of maritime trade and pearling in the Erythraean Sea.Curtis E. Larsen, ''Life and Land Use on the Bahrain Islands: The Geoarcheology of an Ancient Society'' (Chicago: University of Chicago Press, 1983), p.50. The name ''Tylos'' is thought to be a Hellenisation of the Semitic ''Tilmun'' (from Dilmun).Jean-Francois Salles, in ''Traces of Paradise: The Archaeology of Bahrain, 2500BC-300AD'', ed. Michael Rice and Harriet Crawford (I. B. Tauris, 2002), p.132. From the 6th to 3rd century BC Bahrain was part of the Persian Empire.Pirouz Mojtahed-Zadeh, ''Security and Territoriality in the Persian Gulf: A Maritime Political Geography'' (London: Routledge), p. 119. After the conquest of Persia by Alexander the Great, his admiral Nearchus led an expedition which discovered the island, and serving under Nearchus was Androsthenes of Thasos, who left an extensive account of the islan ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hot Jupiter
Hot Jupiters (sometimes called hot Saturns) are a class of gas giant exoplanets that are inferred to be physically similar to Jupiter (i.e. Jupiter analogue, Jupiter analogues) but that have very short orbital periods (). The close proximity to their stars and high surface-atmosphere temperatures resulted in their informal name "hot Jupiters". Hot Jupiters are the easiest extrasolar planets to detect via the radial velocity, 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 . Discovered in 1995, it was the first extrasolar planet found orbiting a Sun-like star. has an orbital period of about four days. General characteristics Though there is diversity among hot Jupiters, they do share some common properties. * Their defining characteristics are their large masses and short orbital periods, spanning 0.36–11.8 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Planetary Systems With One Confirmed Planet
Planetary means relating to a planet or planets. It can also refer to: Science * Planetary habitability, the measure of an astronomical body's potential to develop and sustain life * Planetary nebula, an astronomical object People * Planetary (rapper), one half of east coast rap group OuterSpace Arts, entertainment, and media * ''Planetary'' (comics), a comic book series by Warren Ellis and John Cassaday * "Planetary (Go!)", a 2011 song by rock band My Chemical Romance * ''Planetary Radio'', a public radio show about space exploration, produced by The Planetary Society Organizations * The Planetary Society, the Earth's largest space interest group Technology * Epicyclic gearing An epicyclic gear train (also known as a planetary gearset) is a gear reduction assembly consisting of two gears mounted so that the center of one gear (the "planet") revolves around the center of the other (the "sun"). A carrier connects the ... (planetary gearing), an automotive transmission te ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nature (journal)
''Nature'' is a British weekly scientific journal founded and based in London, England. As a multidisciplinary publication, ''Nature'' features Peer review, peer-reviewed research from a variety of academic disciplines, mainly in science and technology. It has core editorial offices across the United States, continental Europe, and Asia under the international scientific publishing company Springer Nature. ''Nature'' was one of the world's most cited scientific journals by the Science Edition of the 2022 ''Journal Citation Reports'' (with an ascribed impact factor of 50.5), making it one of the world's most-read and most prestigious academic journals. , it claimed an online readership of about three million unique readers per month. Founded in the autumn of 1869, ''Nature'' was first circulated by Norman Lockyer and Alexander MacMillan (publisher), Alexander MacMillan as a public forum for scientific innovations. The mid-20th century facilitated an editorial expansion for the j ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
NASA
The National Aeronautics and Space Administration (NASA ) is an independent agencies of the United States government, independent agency of the federal government of the United States, US federal government responsible for the United States's civil list of government space agencies, space program, aeronautics research and outer space, space research. National Aeronautics and Space Act, Established in 1958, it succeeded the National Advisory Committee for Aeronautics (NACA) to give the American space development effort a distinct civilian orientation, emphasizing peaceful applications in space science. It has since led most of America's space exploration programs, including Project Mercury, Project Gemini, the 1968–1972 Apollo program missions, the Skylab space station, and the Space Shuttle. Currently, NASA supports the International Space Station (ISS) along with the Commercial Crew Program and oversees the development of the Orion (spacecraft), Orion spacecraft and the Sp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
