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WASP-17b
WASP-17b, officially named Ditsö̀, is an exoplanet in the constellation Scorpius that is orbiting the star WASP-17. Its discovery was announced on 11 August 2009. It is the first planet discovered to have a retrograde orbit, meaning it orbits in a direction counter to the rotation of its host star. This discovery challenged traditional planetary formation theory. In terms of diameter, WASP-17b is one of the largest exoplanets discovered and at half Jupiter's mass, this made it the most puffy planet known in 2010. On 3 December 2013, scientists working with the Hubble Space Telescope reported detecting water in the exoplanet's atmosphere. WASP-17b's name was selected in the NameExoWorlds campaign by Costa Rica, during the 100th anniversary of the International Astronomical Union. Ditsö̀ is the name that the god Sibö̀ gave to the first Bribri people in Talamancan mythology. Discovery A team of researchers led by David Anderson of Keele University in Staffordshire, Eng ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Largest Exoplanets
Below is a list of the largest exoplanets so far discovered, in terms of physical size, ordered by radius. Limitations This list of extrasolar objects may and will change over time due to diverging measurements published between scientific journals, varying methods used to examine these objects, and the notably difficult task of discovering extrasolar objects in general. These objects are not stars, and are quite small on a universal or even stellar scale. Furthermore, these objects might be brown dwarfs, sub-brown dwarfs, or not even exist at all. Because of this, this list only cites the most certain measurements to date and is prone to change. Maximum Mass Limitation Different space organisation have different maximum masses for exoplanets. The NASA Exoplanet Archive (NASA EA) states that an object with a minimum mass lower than 30 , not being a free-floating object, is qualified as an exoplanet. On the other hand, the official working definition by the International ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
WASP-17
WASP-17 is an F-type main sequence star approximately 1,310 light-years away in the constellation Scorpius. WASP-17 is named Dìwö. The name was selected in the NameExoWorlds campaign by Costa Rica, during the 100th anniversary of the IAU. Dìwö in Bribri language means the sun. The star, although similar to the Sun in terms of overall contents of heavy elements, is depleted of carbon. The carbon to oxygen molar ratio of 0.18 for WASP-17 is well below the solar ratio of 0.55. Planetary system As of 2009, an exoplanet has been confirmed to orbit the star. The planet, WASP-17b, is unusual in that it is believed to orbit in the opposite direction to the star's spin (a retrograde orbit), and is twice the size of Jupiter, but half its mass. The planet is also named Ditsö̀. It is subject to intensive photo-evaporation, and may be completely destroyed within one billion years from now. The planet was discovered by the SuperWASP WASP or Wide Angle Search for Planets ... [...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] |
Retrograde Orbit
Retrograde motion in astronomy is, in general, orbital or rotational motion of an object in the direction opposite the rotation of its primary, that is, the central object (right figure). It may also describe other motions such as precession or nutation of an object's rotational axis. Prograde or direct motion is more normal motion in the same direction as the primary rotates. However, "retrograde" and "prograde" can also refer to an object other than the primary if so described. The direction of rotation is determined by an inertial frame of reference, such as distant fixed stars. In the Solar System, the orbits around the Sun of all planets and dwarf planets and most small Solar System bodies, except many comets and few distant objects, are prograde. They orbit around the Sun in the same direction as the sun rotates about its axis, which is counterclockwise when observed from above the Sun's north pole. Except for Venus and Uranus, planetary rotations around their axis are ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Puffy Planet
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 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 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 Jupiter masses and 1.3–111 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Keele University
Keele University is a Public university#United Kingdom, public research university in Keele, approximately from Newcastle-under-Lyme, Staffordshire, England. Founded in 1949 as the University College of North Staffordshire, it was granted university status by Royal Charter as the University of Keele in 1962. Keele occupies a rural campus close to the village of Keele and includes extensive woods, lakes and Keele Hall set in the Staffordshire Potteries. It has a science park and a conference centre, and is the largest campus university in the UK. The university's Keele University Medical School, Medical School operates the clinical part of its courses from a separate campus at the Royal Stoke University Hospital. The School of Nursing and Midwifery is based at the nearby Clinical Education Centre. History Establishment Cambridge and Oxford extension lectures had been arranged in the Potteries since the 1890s, but outside any organised educational framework or establishment. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
South African Astronomical Observatory
The South African Astronomical Observatory (SAAO) is the national centre for optical and infrared astronomy in South Africa. It was established in 1972. The observatory is run by the National Research Foundation of South Africa. The facility's function is to conduct research in astronomy and astrophysics. The primary telescopes are located in Sutherland, which is from Observatory, Cape Town, where the headquarters is located. The SAAO has links worldwide for scientific and technological collaboration. Instrumental contributions from the South African Astronomical Observatory include the development of a spherical aberration corrector and the Southern African Large Telescope (SALT). The Noon Gun on Cape Town's Signal Hill is fired remotely by a time signal from the Observatory. History The history of the SAAO began when the Royal Observatory at the Cape of Good Hope was founded in 1820, the first scientific institution in Africa. Construction of the main buildings was c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Water
Water is an inorganic compound with the chemical formula . It is a transparent, tasteless, odorless, and Color of water, nearly colorless chemical substance. It is the main constituent of Earth's hydrosphere and the fluids of all known living organisms (in which it acts as a solvent). It is vital for all known forms of life, despite not providing food energy or organic micronutrients. Its chemical formula, , indicates that each of its molecules contains one oxygen and two hydrogen atoms, connected by covalent bonds. The hydrogen atoms are attached to the oxygen atom at an angle of 104.45°. In liquid form, is also called "water" at standard temperature and pressure. Because Earth's environment is relatively close to water's triple point, water exists on Earth as a solid, a liquid, and a gas. It forms precipitation in the form of rain and aerosols in the form of fog. Clouds consist of suspended droplets of water and ice, its solid state. When finely divided, crystalline ice ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sibú
Sibú is the primary deity in the Talamancan mythology of Costa Rica. He is the creator of Earth and humanity, god of wisdom, values, and indigenous customs. He is called Sibú by the Bribri and Cabécar, Sibö by the Teribe, and Zipoh by the Boruca. Sibú is also a culture hero, who taught the Bribri and Cabécar people what foods are safe to eat, how to plant crops, set down the rules of society regarding incest, clans, and morality, and gave the ''Awápa'' (Bribri shamans) songs, ritual language, and magic stones (''sĩã ). In Bribri and Cabécar culture, Sibö is seen as the "owner" or "guardian" ( Bribri: ''wak'') of humanity, as he created the first human beings out of corn seeds. Family * Sìitami – mother of Sibú * Sibökõmõ – father of Sibú * Nãmãitãmĩ, also called Tapir – Sibú's sister, mother of Irìria * Irìria, also called Sulára, la Niña Tierra, or tapir girl – Sibú's niece * Sulá – father of Irìria, lord of the underworld * Bikakr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bribri People
The Bribri (also Abicetava) are an Indigenous peoples of the Americas, Indigenous people in eastern Costa Rica and northern Panama. Today, most Bribri people speak the Bribri language or Spanish. There are varying estimates from government officials of the group's population. Estimates of the total Bribri population range as high as 35,000 people, although official estimates assert there are about 11,500 Bribri people in Costa Rica, and about 1000 Bribri people in Panama. According to a census by the Ministerio de Salud of Costa Rica however, there are 11,500 Bribri living within service range of the Hone Creek Clinic alone, suggesting the total Costa Rican Bribri population is larger. They are also a voting majority in the Puerto Viejo de Talamanca area. The Bribri historically struggled to remain on their land and preserve their culture, though the Costa Rican government currently recognizes their use of designated Indigenous territory (Costa Rica), Indigenous Territories, an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Talamancan Mythology
Talamancan mythology includes the traditional beliefs of the Bribri and Cabécar peoples, two groups of indigenous peoples in Costa Rica living in the Talamanca region. These peoples speak two different but closely related languages, and from a cultural point of view, constitute a single community. With some exceptions, they share the same religious beliefs, the same stories, the same ritual songs, etc. Mythological figures * Sibú or Sibö - primary deity, creator of the Earth and humans, ''Wak'' (owner/guardian) of the indigenous people. * Shulákama or Shula'kma - King of the Serpents. Venomous snakes are considered his arrows. * Itso' - helper or ''peón'' of Sibú * Sórkura or SórkuLa - grandfather (in some sources, grand-uncle) of Sibú * Sìitami - mother of Sibú * Sibökõmõ - father of Sibú * Nãmãitãmĩ, also called Tapir - Sibú's sister, mother of Irìria * Irìria, also called Sulára, la Niña Tierra, or tapir girl - Sibú's niece * Sulá - father of I ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Staffordshire
Staffordshire (; postal abbreviation ''Staffs''.) is a Ceremonial counties of England, ceremonial county in the West Midlands (region), West Midlands of England. It borders Cheshire to the north-west, Derbyshire and Leicestershire to the east, Warwickshire to the south-east, the West Midlands (county), West Midlands county and Worcestershire to the south, and Shropshire to the west. The largest settlement is the city of Stoke-on-Trent. The county has an area of and a population of 1,131,052. Stoke-on-Trent is located in the north and is immediately adjacent to the town of Newcastle-under-Lyme. Stafford is in the centre of the county, Burton upon Trent in the east, and the city of Lichfield and Tamworth, Staffordshire, Tamworth in the south-east. For local government purposes Staffordshire comprises a non-metropolitan county, with nine districts, and the Unitary authorities of England, unitary authority area of Stoke-on-Trent. The county Historic counties of England, historical ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
