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Menrva (crater)
Menrva is the largest crater on Titan, with a diameter of 392 kilometers. The crater is a heavily eroded double ringed impact basin, similar to the impact related features of Mars and Mercury. This is evident by Menrva's distinct lack of a central peak, indicating modification of the crater's surface since formation. It has been estimated that Menrva is approximately 2.8 kilometers deep. A network of channels known as Elivagar Flumina flow away from the crest of the crater into a catchment basin. The feature is named after the goddess of wisdom in Etruscan mythology, Menrva Menrva (also spelled Menerva) was an Etruscan goddess of war, art, wisdom, and medicine. She contributed much of her character to the Roman Minerva. She was the child of Uni and Tinia. Although Menrva was seen by Hellenized Etruscans as their .... References {{Titan Impact craters on Saturn's moons Surface features of Titan (moon) ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Crater Menrva On Titan 2005-02-15
Crater may refer to: Landforms * Impact crater, a depression caused by two celestial bodies impacting each other, such as a meteorite hitting a planet * Explosion crater, a hole formed in the ground produced by an explosion near or below the surface ** Subsidence crater, a depression from an underground (usually nuclear) explosion * Pit crater, a crater that forms through sinking of the surface and not as a vent for lava * Volcanic crater, a roughly circular depression in the ground caused by volcanic activity **Caldera, a large cauldron-like depression formed following the evacuation of a magma chamber/reservoir **Maar, a type of volcanic crate caused by a phreatic eruption or explosion ** Volcanic crater lake, including a list of lakes that formed in a volcanic or impact crater Music * ''Crater'' (Daniel Menche and Mamiffer album), 2016 * Crater (Fission album), 2004 Places *Crati or Crater, a river of southern Italy * Crater, California, U.S. * Crater (Aden), a district of the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Menrva
Menrva (also spelled Menerva) was an Etruscan goddess of war, art, wisdom, and medicine. She contributed much of her character to the Roman Minerva. She was the child of Uni and Tinia. Although Menrva was seen by Hellenized Etruscans as their counterpart to Greek Athena, Menrva has some unique traits that make it clear that she was not an import from Greece. Etruscan artists under the influence of Greek culture, however, liked to portray Menrva with Gorgoneion, helmet, spear, and shield, and, on one mirrorback, as bursting from the head of her father, Tinia. Also, she commonly is seen as the protector of Hercle (Heracles) and ''Pherse'' (Perseus). On a bronze mirror found at Praeneste, she attends Perseus, who consults two Graeae, and, on another, holds high the head of Medusa, while she and seated Perseus and Hermes all gaze safely at its reflection in a pool at their feet. These images are more likely to reflect literary sources than any cult practice. On a bronze mirror fr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Titan (moon)
Titan is the largest moon of Saturn and the second-largest natural satellite in the Solar System. It is the only moon known to have a dense atmosphere, and is the only known object in space other than Earth on which clear evidence of stable bodies of surface liquid has been found. Titan is one of the seven gravitationally rounded moons in orbit around Saturn, and the second most distant from Saturn of those seven. Frequently described as a planet-like moon, Titan is 50% larger (in diameter) than Earth's Moon and 80% more massive. It is the second-largest moon in the Solar System after Jupiter's moon Ganymede, and is larger than the planet Mercury, but only 40% as massive. Discovered in 1655 by the Dutch astronomer Christiaan Huygens, Titan was the first known moon of Saturn, and the sixth known planetary satellite (after Earth's moon and the four Galilean moons of Jupiter). Titan orbits Saturn at 20 Saturn radii. From Titan's surface, Saturn subtends an arc of 5.09 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mars
Mars is the fourth planet from the Sun and the second-smallest planet in the Solar System, only being larger than Mercury. In the English language, Mars is named for the Roman god of war. Mars is a terrestrial planet with a thin atmosphere (less than 1% that of Earth's), and has a crust primarily composed of elements similar to Earth's crust, as well as a core made of iron and nickel. Mars has surface features such as impact craters, valleys, dunes and polar ice caps. It has two small and irregularly shaped moons, Phobos and Deimos. Some of the most notable surface features on Mars include Olympus Mons, the largest volcano and highest known mountain in the Solar System and Valles Marineris, one of the largest canyons in the Solar System. The Borealis basin in the Northern Hemisphere covers approximately 40% of the planet and may be a large impact feature. Days and seasons on Mars are comparable to those of Earth, as the planets have a similar rotation period a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mercury (planet)
Mercury is the smallest planet in the Solar System and the closest to the Sun. Its orbit around the Sun takes 87.97 Earth days, the shortest of all the Sun's planets. It is named after the Roman god ' ( Mercury), god of commerce, messenger of the gods, and mediator between gods and mortals, corresponding to the Greek god Hermes (). Like Venus, Mercury orbits the Sun within Earth's orbit as an inferior planet, and its apparent distance from the Sun as viewed from Earth never exceeds 28°. This proximity to the Sun means the planet can only be seen near the western horizon after sunset or the eastern horizon before sunrise, usually in twilight. At this time, it may appear as a bright star-like object, but is more difficult to observe than Venus. From Earth, the planet telescopically displays the complete range of phases, similar to Venus and the Moon, which recurs over its synodic period of approximately 116 days. The synodic proximity of Mercury to Earth makes Mercury ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
John Wiley And Sons
John Wiley & Sons, Inc., commonly known as Wiley (), is an American multinational publishing company founded in 1807 that focuses on academic publishing and instructional materials. The company produces books, journals, and encyclopedias, in print and electronically, as well as online products and services, training materials, and educational materials for undergraduate, graduate, and continuing education students. History The company was established in 1807 when Charles Wiley opened a print shop in Manhattan. The company was the publisher of 19th century American literary figures like James Fenimore Cooper, Washington Irving, Herman Melville, and Edgar Allan Poe, as well as of legal, religious, and other non-fiction titles. The firm took its current name in 1865. Wiley later shifted its focus to scientific, technical, and engineering subject areas, abandoning its literary interests. Wiley's son John (born in Flatbush, New York, October 4, 1808; died in East Orange, New ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Elivagar Flumina
Elivagar Flumina is a network of river channels ranging from 23 km to 210 km in length in the region around the Menrva Crater of Titan. The channel system is at least 120 km wide and shows signs of erosion. At its mouth, an alluvial fan is present. The Elivagar Flumina is interpreted as alluvial due to its closeness to fluvial valleys and as understood from the radar backscatter. Geomorphologic mapping of the Menrva region of Titan has yielded evidence for exogenic processes such as hydrocarbon fluid channelization (in other words flash floods) that are thought to have formed the Flumina network. The Elivagar Flumina is named after the Élivágar, a group of poisonous ice rivers in Norse mythology Norse, Nordic, or Scandinavian mythology is the body of myths belonging to the North Germanic peoples, stemming from Old Norse religion and continuing after the Christianization of Scandinavia, and into the Nordic folklore of the modern peri ....Robert Brown; Jean ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Impact Craters On Saturn's Moons
Impact may refer to: * Impact (mechanics), a high force or shock (mechanics) over a short time period * Impact, Texas, a town in Taylor County, Texas, US Science and technology * Impact crater, a meteor crater caused by an impact event * Impact event, the collision of a meteoroid, asteroid or comet with Earth * Impact factor, a measure of the citations to a science or social science journal Books and magazines * ''Impact'' (novel), a 2010 novel by Douglas Preston *'' Impact Press'', a former Orlando, Florida-based magazine * Impact Magazines, a former UK magazine publisher * ''Impact'' (conservative magazine), a British political magazine * ''Impact'' (British magazine), a British action film magazine * ''Impact'', a French action film magazine spun off from '' Mad Movies'' * ''Impact'' (UNESCO magazine), a former UNESCO quarterly titled ''IMPACT of science on society'' * ''Impact'' (student magazine), a student magazine for the University of Nottingham, England * '' Bat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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