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Earth-grazing Fireball
An Earth-grazing fireball (or Earth grazer) is a fireball (meteor), fireball, a very bright meteor that enters Earth’s atmosphere and leaves again. Some fragments may impact Earth as meteorites, if the meteor starts to break up or explodes in mid-air. These phenomena are then called Earth-grazing meteor processions and bolides. Famous examples of Earth-grazers are the 1972 Great Daylight Fireball and the Meteor Procession of July 20, 1860.. Txstate.edu (2010-05-28). Retrieved on 2013-10-19.150-year-old meteor mystery solved Overview As an Earth-grazer Atmospheric entry, passes through the atmosphere its mass and velocity are changed, so that its orbit, after it re-enters spac ...[...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Frederic Church Meteor Of 1860
Frederic may refer to: Places United States * Frederic, Wisconsin, a village in Polk County * Frederic Township, Michigan, a township in Crawford County ** Frederic, Michigan, an unincorporated community Other uses * Frederic (band), a Japanese rock band * Frederic (given name), a given name (including a list of people and characters with the name) * Hurricane Frederic, a hurricane that hit the U.S. Gulf Coast in 1979 * Trent Frederic, American ice hockey player See also * Frédéric * Frederick (other) * Fredrik * Fryderyk (other) {{disambiguation, geo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Meteoroid
A meteoroid ( ) is a small rocky or metallic body in outer space. Meteoroids are distinguished as objects significantly smaller than ''asteroids'', ranging in size from grains to objects up to wide. Objects smaller than meteoroids are classified as ''micrometeoroids'' or ''space dust''. Many are fragments from comets or asteroids, whereas others are impact event, collision impact space debris, debris ejected from bodies such as the Moon or Mars. The visible passage of a meteoroid, comet, or asteroid atmospheric entry, entering Earth's atmosphere is called a meteor, and a series of many meteors appearing seconds or minutes apart and appearing to originate from the same fixed point in the sky is called a meteor shower. An estimated 25 million meteoroids, micrometeoroids and other space debris enter Earth's atmosphere each day, which results in an estimated 15,000 tonnes of that material entering the atmosphere each year. A ''meteorite'' is the remains of a meteoroid that has surv ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Desert Fireball Network
The Desert Fireball Network (DFN) is a network of cameras in Australia. It is designed to track meteoroids entering the atmosphere, and aid in recovering meteorites. It currently operates 50 autonomous cameras, spread across Western Australia, Western and South Australia, including Nullarbor plain, Wheatbelt (Western Australia), WA wheatbelt, and South Australian desert, covering an area of 2.5 million km2. The locations of the stations were chosen to facilitate meteorite searching. Starting in 2018, cameras deployed across the world began the first global fireball observatory in association with partner research teams. The DFN observatories capture approximately 30-second exposures of the sky from dusk until dawn every night, and the DFN team is automatically alerted if a fireball (meteor), fireball or Meteoroid, meteor is detected. Based on the long-exposure images, trajectories and orbits are plotted in a semi-automated manner, and a fall-line is generated to indicate the wherea ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Christmas Eve
Christmas Eve is the evening or entire day before Christmas, the festival commemorating nativity of Jesus, the birth of Jesus in Christianity, Jesus. Christmas Day is observance of Christmas by country, observed around the world, and Christmas Eve is widely observed as a full or partial holiday in anticipation of Christmas Day. Together, both days are considered one of the most culturally significant celebrations in Christendom and Western world, Western society. Christmas celebrations in the Christian denomination, denominations of Western Christianity have long begun on Christmas Eve, due in part to the Christian liturgical day starting at sunset, a practice inherited from Jewish tradition, and based on the Genesis creation narrative, story of Creation in the Book of Genesis: "And there was evening, and there was morning—the first day." Many churches still ring their church bells and hold Christian prayer, prayers in the evening; for example, the Nordic Lutheran churches. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
European Fireball Network
European Fireball Network is an international astronomy organization based in Central Europe (Germany and Czech Republic). Its purpose is systematic and simultaneous night observation of meteors and other nebular objects. Description The network was initially located at the Ondřejov Observatory, Czech Republic, after the fall of the Příbram meteorite on 7 April 1959, which was the first meteorite simultaneously observed by several stations. By 1963, the network consisted of five stations. It was later (about 1968) expanded by the installation of about 15 new stations in Germany and named the European Fireball Network. The network currently consists of at least 34 camera stations located in Germany, the Czech Republic, Belgium, Luxembourg, Switzerland, Slovakia and Austria at elevations up to 1846 m above mean sea level. The cameras are separated by a distance of about ; they cover an area of about and photograph the entire visible sky. Cameras at Czech stations are equi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aten Asteroid
The Aten asteroids are a dynamical group of asteroids whose orbits bring them into proximity with Earth. By definition, Atens are Earth-crossing asteroids . The group is named after 2062 Aten, the first of its kind, discovered on 7 January 1976 by American astronomer Eleanor Helin at Palomar Observatory. As of January 2025, 2,966 Atens have been discovered, of which 271 are numbered, 14 are named, and 197 are classified as potentially hazardous asteroids. Description Aten asteroids are defined by having a semi-major axis (a) of less than 1.0 (AU), the roughly average distance from the |
Earth-grazing Meteoroid Of 13 October 1990
On 13 October 1990, meteoroid EN131090, with an estimated mass of 44 kg, entered the Atmosphere of Earth, Earth's atmosphere above Czechoslovakia and Poland and, after a few seconds, returned to space. Observational astronomy, Observations of Earth-grazing fireball, such events are quite rare; this was the second recorded using scientific astronomical instruments (after the 1972 Great Daylight Fireball) and the first recorded from two distant positions, which enabled the calculation of several of its orbital characteristics. The Near-Earth object, encounter with Earth significantly changed its orbit and, to a smaller extent, some of its physical properties (mass and structure of its outer layer). Observations Visual observations were reported by three independent Czech observers: astronomer Petr Pravec, Pavel Klásek, and Lucie Bulíčková. According to their report, the event started at 03:27:16±3 Universal Time, UTThe record is in Universal Time (UT), local Central ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Earth
Earth is the third planet from the Sun and the only astronomical object known to Planetary habitability, harbor life. This is enabled by Earth being an ocean world, the only one in the Solar System sustaining liquid surface water. Almost all of Earth's water is contained in its global ocean, covering Water distribution on Earth, 70.8% of Earth's crust. The remaining 29.2% of Earth's crust is land, most of which is located in the form of continental landmasses within Earth's land hemisphere. Most of Earth's land is at least somewhat humid and covered by vegetation, while large Ice sheet, sheets of ice at Polar regions of Earth, Earth's polar polar desert, deserts retain more water than Earth's groundwater, lakes, rivers, and Water vapor#In Earth's atmosphere, atmospheric water combined. Earth's crust consists of slowly moving tectonic plates, which interact to produce mountain ranges, volcanoes, and earthquakes. Earth's outer core, Earth has a liquid outer core that generates a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Natural Satellite
A natural satellite is, in the most common usage, an astronomical body that orbits a planet, dwarf planet, or small Solar System body (or sometimes another natural satellite). Natural satellites are colloquially referred to as moons, a derivation from the Moon of Earth. In the Solar System, there are six planetary satellite systems containing 418 known natural satellites altogether. Seven objects commonly considered dwarf planets by astronomers are also known to have natural satellites: , Pluto, Haumea, , Makemake, , and Eris. As of January 2022, there are 447 other minor planets known to have natural satellites. A planet usually has at least around 10,000 times the mass of any natural satellites that orbit it, with a correspondingly much larger diameter. The Earth–Moon system is a unique exception in the Solar System; at 3,474 kilometres (2,158 miles) across, the Moon is 0.273 times the diameter of Earth and about of its mass. The next largest ratios are the N ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Meteor Procession Of February 9, 1913
On February 9, 1913, a significant meteoric phenomenon was reported from locations across Canada, the northeastern United States, Bermuda, and from many ships at sea as far south as Brazil, giving a total recorded ground track of over , and becoming known as the Great Meteor Procession of 1913. The meteors were particularly unusual in that there was no apparent radiant, the point in the sky from which meteors usually appear to originate. The observations were analysed in detail, later the same year, by the astronomer Clarence Chant, leading him to conclude that as all accounts were positioned along a great circle arc, the source had been a small, short-lived natural satellite of the Earth. John A. O'Keefe, who conducted several studies of the event, proposed that the meteors should be referred to as the ''Cyrillids'', in reference to the feast day of Cyril of Alexandria (February 9 in the Roman Catholic calendar from 1882 to 1969). Events of February 9 The evening of February ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Meteor Procession Of July 20, 1860
The 1860 Great Meteor procession occurred on July 20, 1860. It was an extremely rare meteoric phenomenon reported from locations across the United States. American landscape painter Frederic Church saw and painted a spectacular string of fireball meteors across the Catskill evening sky, an extremely rare Earth-grazing meteor procession. It is believed that this was the event referred to in the poem ''Year of Meteors, 1859-60'', by Walt Whitman. In 2010, 150 years later, it was determined to be an Earth-grazing meteor procession. See also * 1783 Great Meteor * 1913 Great Meteor Procession * 1972 Great Daylight Fireball The Great Daylight Fireball (also known as the Grand Teton Meteor) was an Earth-grazing fireball that passed within of Earth's surface at 20:29 UTC on August 10, 1972. It entered Earth's atmosphere at a speed of in daylight over Utah, United ... References {{Modern impact events Meteoroids Great Meteor Great Meteor 18600720 Modern Earth ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
