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TOI-715 B
TOI-715 b is a super-Earth exoplanet in the habitable zone of its parent M-type star, TOI-715. The planet is 1.55 times larger than Earth, and is located at from its star. The planet orbits in the habitable zone of its star and has an equilibrium temperature of . It was discovered by the Transiting Exoplanet Survey Satellite (TESS) in 2023; according to the authors of the discovery paper, it is the first TESS discovery in the conservative habitable zone. NASA stated that the James Webb Space Telescope may be used in the future to look for evidence of water or planetary atmosphere. Additionally, there may be a second exoplanet in the same system, TIC 271971130.02, that, if confirmed, would be the smallest known habitable-zone exoplanet. Conservative habitable zone The concept of "conservative habitable zone" was defined by Koparappu et al. in 2014. It is the region where the planet receives insolation equivalent to 0.42 to 0.842 times the insolation received from Earth by th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
TESS
Tess or TESS may refer to: Film and theatre * Tess (1979 film), ''Tess'' (1979 film), a 1979 film adaptation of ''Tess of the d'Urbervilles'' * Tess (2016 film), ''Tess'' (2016 film), a South African production Music * Tess (band), a Spanish pop band active from 2000 to 2005 * Tess (musician), a UK musician * Tess Mattisson, a Swedish musician born 1978 Science and technology * Trademark Electronic Search System, a service of the United States Patent and Trademark Office * Transiting Exoplanet Survey Satellite, a space telescope designed to search for extra-solar planets * Ethinylestradiol/cyproterone acetate, a birth control pill * Telescopic Sighting System, a tank/fighter aircraft sight Other uses * Tess (given name) * Various List of storms named Tess, storms named Tess * Nikolay Tess (1921–2006), member of the Soviet Ministry for State Security, convicted in Latvia of mass deportations of Latvians in the 1940s See also * TES (other) {{disambiguation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Red Dwarf
A red dwarf is the smallest kind of star on the main sequence. Red dwarfs are by far the most common type of fusing star in the Milky Way, at least in the neighborhood of the Sun. However, due to their low luminosity, individual red dwarfs are not easily observed. Not one star that fits the stricter definitions of a red dwarf is visible to the naked eye. Proxima Centauri, the star nearest to the Sun, is a red dwarf, as are fifty of the sixty nearest stars. According to some estimates, red dwarfs make up three-quarters of the fusing stars in the Milky Way. The coolest red dwarfs near the Sun have a surface temperature of about and the smallest have radii about 9% that of the Sun, with masses about 7.5% that of the Sun. These red dwarfs have spectral types of L0 to L2. There is some overlap with the properties of brown dwarfs, since the most massive brown dwarfs at lower metallicity can be as hot as and have late M spectral types. Definitions and usage of the term "red d ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Super-Earths In The Habitable Zone
A super-Earth is a type of exoplanet with a mass higher than Earth, but substantially below those of the Solar System's ice giants, Uranus and Neptune, which are 14.5 and 17.1 times Earth's, respectively. The term "super-Earth" refers only to the mass of the planet, and so does not imply anything about the surface conditions or habitability. The alternative term "gas dwarfs" may be more accurate for those at the higher end of the mass scale, although "mini-Neptunes" is a more common term. Definition In general, super-Earths are defined by their masses. The term does not imply temperatures, compositions, orbital properties, habitability, or environments. While sources generally agree on an upper bound of 10 Earth masses (~69% of the mass of Uranus, which is the Solar System's giant planet with the least mass), the lower bound varies from 1 or 1.9 to 5, with various other definitions appearing in the popular media. The term "super-Earth" is also used by astronomers to refer ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Münchner Merkur
The ''Münchner Merkur'' (, literally "Munich Mercurius", i.e. the Roman god of messengers) is a German Bavarian daily subscription newspaper, which is published from Monday to Saturday. It is located in Munich and belongs to the Müncher Merkur/tz media group. The paid circulation of the ''Münchner Merkur'' is 271,335 copies. History The ''Merkur'' was the second newspaper after the ''Süddeutsche Zeitung'' which was allowed to be published in Munich. 1968 the subsidiary '' tz'' was brought onto the market as a tabloid. The first edition of what was initially named ''Münchner Mittag'' ("Munich Noon"), was released on 13 November 1946 through a licence of the American military government. One of the founding members and publishers was Felix Buttersack. In 1982, the Westphalia Westphalia (; ; ) is a region of northwestern Germany and one of the three historic parts of the state of North Rhine-Westphalia. It has an area of and 7.9 million inhabitants. The territo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hindustan Times
''Hindustan Times'' is an Indian English language, English-language daily newspaper based in Delhi. It is the flagship publication of HT Media Limited, an entity controlled by the Birla family, and is owned by Shobhana Bhartia, the daughter of K. K. Birla. It was founded by Sunder Singh Lyallpuri, founder-father of the Akali movement and the Shiromani Akali Dal, in Delhi and played integral roles in the Indian independence movement as a nationalist daily. ''Hindustan Times'' is one of the List of newspapers in India by circulation, largest newspapers in India by circulation. According to the Audit Bureau of Circulations (India), Audit Bureau of Circulations, it has a circulation of 993,645 copies . The Indian Readership Survey 2014 revealed that ''HT'' is the second-most widely read English newspaper in India after ''The Times of India''. It is popular in North India, with simultaneous editions from New Delhi, Mumbai, Lucknow, Patna, Chandigarh and Ranchi. The print location ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Small Telescope
A small telescope is generally considered by professional astronomers to be any reflecting telescope with a primary mirror that is less than in diameter. By amateur standards, a small telescope can have a primary mirror/aperture less than in diameter. Little if any professional-level research is performed with refracting telescopes in the modern era of astronomy. Small telescopes dominate astronomical research in the fields of asteroid/comet discovery/observation, variable star photometry, supernova/ nova discovery, and colorimetry/ polarimetry of the Solar System's planets. Because of their limited light-gathering capability, small telescopes are usually not well-suited to spectroscopy, although some useful spectroscopic work can be performed with reflecting telescopes with a primary mirror as small as when equipped with the increasingly sophisticated CCD imaging and spectroscopic instrumentation that has become available to amateur astronomers in the 21st century. Most tel ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Naked Eye
Naked eye, also called bare eye or unaided eye, is the practice of engaging in visual perception unaided by a magnification, magnifying, Optical telescope#Light-gathering power, light-collecting optical instrument, such as a telescope or microscope, or eye protection. In astronomy, the naked eye may be used to observe celestial events and astronomical object, objects visible without equipment, such as conjunction (astronomy), conjunctions, passing comets, meteor showers, and the brightest asteroids, including 4 Vesta. Sky lore and various tests demonstrate an impressive variety of phenomena visible to the unaided eye. Basic properties Some basic properties of the human eye are: *Quick autofocus from distances of 25 cm (young people) to 50 cm (most people 50 years and older) to infinity. *Angular resolution: about 1 arcminute, approximately 0.017° or 0.0003 radians, which corresponds to 0.3 m at a 1 km distance. *Field of view (FOV): simultaneous visual ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Apparent Magnitude
Apparent magnitude () is a measure of the Irradiance, brightness of a star, astronomical object or other celestial objects like artificial satellites. Its value depends on its intrinsic luminosity, its distance, and any extinction (astronomy), extinction of the object's light caused by interstellar dust along the sightline, line of sight to the observer. Unless stated otherwise, the word ''magnitude'' in astronomy usually refers to a celestial object's apparent magnitude. The magnitude scale likely dates to before the ancient Ancient Greek astronomy#Astronomy in the Greco-Roman and Late Antique eras, Roman astronomer Ptolemy, Claudius Ptolemy, whose Star catalogue, star catalog popularized the system by listing stars from First-magnitude star, 1st magnitude (brightest) to 6th magnitude (dimmest). The modern scale was mathematically defined to closely match this historical system by Norman Robert Pogson, Norman Pogson in 1856. The scale is reverse logarithmic scale, logarithmic: ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Celestial Pole
The north and south celestial poles are the two points in the sky where Earth's axis of rotation, indefinitely extended, intersects the celestial sphere. The north and south celestial poles appear permanently directly overhead to observers at Earth's North Pole and South Pole, respectively. As Earth spins on its axis, the two celestial poles remain fixed in the sky, and all other celestial points appear to rotate around them, completing one circuit per day (strictly, per sidereal day). The celestial poles are also the poles of the celestial equatorial coordinate system, meaning they have declinations of +90 degrees and −90 degrees (for the north and south celestial poles, respectively). Despite their apparently fixed positions, the celestial poles in the long term do not actually remain permanently fixed against the background of the stars. Because of a phenomenon known as the precession of the equinoxes, the poles trace out circles on the celestial sphere, with a period ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Volans
Volans is a constellation in the southern sky. It represents a flying fish; its name is a shortened form of its original name, Piscis Volans. Volans was one of twelve constellations created by Petrus Plancius from the observations of Pieter Dirkszoon Keyser and Frederick de Houtman and it first appeared on a 35-cm (14") diameter celestial globe published in 1597 (or 1598) in Amsterdam by Plancius with Jodocus Hondius. The first depiction of this constellation in a celestial atlas was in Johann Bayer's ''Uranometria'' of 1603. History Volans is one of the 12 constellations that were introduced by the Dutch navigators Pieter Dirkszoon Keyser and Frederick de Houtman in the late 16th century. It was first depicted on Petrus Plancius’ globe in 1598. Plancius called the constellation ''Vliegendenvis'' (flying fish). In 1603, Johann Bayer included the constellation in his star atlas ''Uranometria'' under the name Piscis Volans, the flying fish. John Herschel proposed shrinking the n ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Insolation
Solar irradiance is the power per unit area ( surface power density) received from the Sun in the form of electromagnetic radiation in the wavelength range of the measuring instrument. Solar irradiance is measured in watts per square metre (W/m2) in SI units. Solar irradiance is often integrated over a given time period in order to report the radiant energy emitted into the surrounding environment (joule per square metre, J/m2) during that time period. This integrated solar irradiance is called solar irradiation, solar radiation, solar exposure, solar insolation, or insolation. Irradiance may be measured in space or at the Earth's surface after atmospheric absorption and scattering. Irradiance in space is a function of distance from the Sun, the solar cycle, and cross-cycle changes.Michael Boxwell, ''Solar Electricity Handbook: A Simple, Practical Guide to Solar Energy'' (2012), pp. 41–42. Irradiance on the Earth's surface additionally depends on the tilt of the meas ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
