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Aliacensis (crater)
Aliacensis is a lunar crater, lunar impact crater that is located in the rugged southern Highland (geography), highlands of the Moon. The crater Werner (crater), Werner is located just to its north-northwest, and a narrow, rugged valley lies between the two comparably sized formations. To the southwest is Walther (crater), Walther, and Apianus (crater), Apianus is to the northeast. Aliacensis is named after the 14th century France, French geographer and theologian Pierre d'Ailly. It is from the Nectarian period, which lasted from 3.92 to 3.85 billion years ago.''Autostar Suite Astronomer Edition''. CD-ROM. Meade, April 2006. The rim of Aliacensis is generally circular, with an outward bulge on the eastern wall. The inner wall has some slight wiktionary:terrace, terracing particularly in the northeast. There is a small crater located across the southern rim. The interior floor is generally flat, with a low central peak slightly offset to the northwest of the midpoint. South of it lie ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lunar Orbiter 4
Lunar Orbiter 4 was a robotic U.S. spacecraft, part of the Lunar Orbiter program, Lunar Orbiter Program, designed to orbit the Moon, after the three previous orbiters had completed the required needs for Project Apollo, Apollo mapping and site selection. It was given a more general objective, to "perform a broad systematic photographic survey of lunar surface features in order to increase the scientific knowledge of their nature, origin, and processes, and to serve as a basis for selecting sites for more detailed scientific study by subsequent orbital and landing missions". It was also equipped to collect selenodetic, radiation intensity, and micrometeoroid impact data. Mission Summary The spacecraft was placed in a Free-return trajectory, cislunar trajectory and injected into an elliptical near polar high lunar orbit for data acquisition. The orbit was with an inclination of 85.5 degrees and a period of 12 hours. After initial photography on May 11, 1967 problems started occu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pierre D'Ailly
Pierre d'Ailly (; Latin ''Petrus Aliacensis'', ''Petrus de Alliaco''; 13519 August 1420) was a French theologian, astrologer and cardinal of the Roman Catholic Church. Academic career D'Ailly was born in Compiègne in 1350 or 1351 of a prosperous bourgeois family. He studied in Paris at the Collège de Navarre, receiving the licentiate in arts in 1367 and the master’s a year later, and was active in university affairs by 1372. D'Ailly taught the Bible in 1375 and the ''Sentences'' of Peter Lombard in 1376–1377, and received the licentiate and doctorate in theology in 1381. He was affiliated with the university, serving as rector in 1384; among his pupils were Jean Gerson and Nicholas of Clémanges. The church's Great Schism, between two popes, arose in 1378. In the spring of 1379, d'Ailly, in anticipation even of the decision of the University of Paris, had carried to the pope of Avignon, Clement VII, the "role" of the French nation. Notwithstanding this prompt adhesion, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lunar Crater
Lunar craters are impact craters on Earth's Moon. The Moon's surface has many craters, all of which were formed by impacts. The International Astronomical Union currently recognizes 9,137 craters, of which 1,675 have been dated. History The word ''crater'' was adopted from the Greek word for "vessel" (, a Greek vessel used to mix wine and water). Galileo built his first telescope in late 1609, and turned it to the Moon for the first time on November 30, 1609. He discovered that, contrary to general opinion at that time, the Moon was not a perfect sphere, but had both mountains and cup-like depressions. These were named craters by Johann Hieronymus Schröter (1791), extending its previous use with volcanoes. Robert Hooke in ''Micrographia'' (1665) proposed two hypotheses for lunar crater formation: one, that the craters were caused by projectile bombardment from space, the other, that they were the products of subterranean lunar volcanism. Scientific opinion as to the origin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Impact Crater
An impact crater is a circular depression in the surface of a solid astronomical object formed by the hypervelocity impact of a smaller object. In contrast to volcanic craters, which result from explosion or internal collapse, impact craters typically have raised rims and floors that are lower in elevation than the surrounding terrain. Lunar impact craters range from microscopic craters on lunar rocks returned by the Apollo Program and small, simple, bowl-shaped depressions in the lunar regolith to large, complex, multi-ringed impact basins. Meteor Crater is a well-known example of a small impact crater on Earth. Impact craters are the dominant geographic features on many solid Solar System objects including the Moon, Mercury, Callisto, Ganymede and most small moons and asteroids. On other planets and moons that experience more active surface geological processes, such as Earth, Venus, Europa, Io and Titan, visible impact craters are less common because they become eroded ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Highland (geography)
Highlands or uplands are areas of high elevation such as a mountainous region, elevated mountainous plateau or high hills. Generally speaking, upland (or uplands) refers to ranges of hills, typically from up to while highland (or highlands) is usually reserved for ranges of low mountains. However, the two terms are sometimes interchangeable. Highlands internationally Probably the best-known area officially or unofficially referred to as ''highlands'' in the Anglosphere is the Scottish Highlands in northern Scotland, the mountainous region north and west of the Highland Boundary Fault. The Highland council area is a local government area in the Scottish Highlands and Britain's largest local government area. Other highland or upland areas reaching 400-500 m or higher in the United Kingdom include the Southern Uplands in Scotland, the Pennines, North York Moors, Dartmoor and Exmoor in England, and the Cambrian Mountains in Wales. Many countries and regions also have areas referr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Moon
The Moon is Earth's only natural satellite. It is the fifth largest satellite in the Solar System and the largest and most massive relative to its parent planet, with a diameter about one-quarter that of Earth (comparable to the width of Australia). The Moon is a planetary-mass object with a differentiated rocky body, making it a satellite planet under the geophysical definitions of the term and larger than all known dwarf planets of the Solar System. It lacks any significant atmosphere, hydrosphere, or magnetic field. Its surface gravity is about one-sixth of Earth's at , with Jupiter's moon Io being the only satellite in the Solar System known to have a higher surface gravity and density. The Moon orbits Earth at an average distance of , or about 30 times Earth's diameter. Its gravitational influence is the main driver of Earth's tides and very slowly lengthens Earth's day. The Moon's orbit around Earth has a sidereal period of 27.3 days. During each synodic period ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Werner (crater)
Werner is a prominent lunar impact crater that lies in the rugged south-central highlands of the Moon. It was named after the 15th-century German mathematician and astronomer Johannes Werner. It is almost joined with the crater Aliacensis to the southeast, and the pair form a rugged valley in the intervening gap. Due west of Werner is the distorted Regiomontanus, and to the north is the remains of Blanchinus. It is from the Eratosthenian period, which lasted from 3.2 to 1.1 billion years ago. The rim of Werner shows little appearance of wear, and is much younger and less eroded than the other large craters in the surroundings. The interior wall is terraced, and there is a noticeable rampart on the exterior. There are several low rises on the crater floor and a notable central peak. Its highly terraced walls attain peaks of almost 1,500 feet. The crater is 45 miles (70 kilometers) in diameter, and the difference in height between its rim and its deepest parts is 4.2 kilometers.'' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Walther (crater)
Walther is an ancient lunar impact crater located in the southern highland region of the Moon. It is joined along the western rim to the crater Deslandres. To the northeast is Aliacensis, and joined to the southeast rim is the irregular Nonius. Description The rim of Walther is complex, heavily eroded and incised by lesser impacts. The wall retains a generally circular form, but many of its features have been worn away and there is a slight protruding bulge in the western rim. The floor has been resurfaced after the original impact, leaving the southwestern half relatively smooth. In the northwest quadrant is an offset central peak that has been worn and impacted by several small craters. Names Walther is named after the German astronomer Bernhard Walther. Like many of the craters on the Moon's near side, it was named (in the Latin form, 'Valtherus') by Giovanni Riccioli, whose 1651 nomenclature system has become standardized. Earlier lunar cartographers had given the featur ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Apianus (crater)
Apianus is a lunar impact crater that is located on the rugged south-central highlands of the Moon. It is named after 16th century German mathematician and astronomer Petrus Apianus. It is located to the northeast of the crater Aliacensis, and to the northwest of Poisson. The worn crater Krusenstern is attached to the west-northwestern rim. Description The outer wall of the crater has been worn and eroded by subsequent impacts, and a pair of small craterlets overlay the rim to the southeast and northeast. The central crater is 63 kilometers in diameter and 2,080 meters deep.''Autostar Suite Astronomer Edition''. CD-ROM. Meade, April 2006. The craterlet on the southeast rim, Apianus B, is a member of a cluster of co-joined craterlets that includes Apianus T and Apianus U. The interior floor of the central crater is relatively smooth and lacks a central peak, although the surface appears somewhat convex. Only a few tiny craterlets mark the surface. The crater is from the Necta ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
France
France (), officially the French Republic ( ), is a country primarily located in Western Europe. It also comprises of Overseas France, overseas regions and territories in the Americas and the Atlantic Ocean, Atlantic, Pacific Ocean, Pacific and Indian Oceans. Its Metropolitan France, metropolitan area extends from the Rhine to the Atlantic Ocean and from the Mediterranean Sea to the English Channel and the North Sea; overseas territories include French Guiana in South America, Saint Pierre and Miquelon in the North Atlantic, the French West Indies, and many islands in Oceania and the Indian Ocean. Due to its several coastal territories, France has the largest exclusive economic zone in the world. France borders Belgium, Luxembourg, Germany, Switzerland, Monaco, Italy, Andorra, and Spain in continental Europe, as well as the Kingdom of the Netherlands, Netherlands, Suriname, and Brazil in the Americas via its overseas territories in French Guiana and Saint Martin (island), ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nectarian
The Nectarian Period of the lunar geologic timescale runs from 3920 million years ago to 3850 million years ago. It is the period during which the Nectaris Basin and other major basins were formed by large impact events. Ejecta from Nectaris form the upper part of the densely cratered terrain found in lunar highlands. Relationship to Earth's geologic time scale Since little or no geological evidence on Earth exists from the time spanned by the Nectarian period of the Moon, the Nectarian has been used by at least one notable scientific work as an unofficial subdivision of the terrestrial Hadean eon Eon or Eons may refer to: Time * Aeon, an indefinite long period of time * Eon (geology), a division of the geologic time scale Arts and entertainment Fictional characters * Eon, in the 2007 film '' Ben 10: Race Against Time'' * Eon, in the .... See also * References {{Geological history, c *03 Lunar geologic periods ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Terrace
Terrace may refer to: Landforms and construction * Fluvial terrace, a natural, flat surface that borders and lies above the floodplain of a stream or river * Terrace, a street suffix * Terrace, the portion of a lot between the public sidewalk and the street * Terrace (earthworks), a leveled surface built into the landscape for agriculture or salt production * Terrace (building), a raised flat platform * Terrace garden, an element where a raised flat paved or gravelled section overlooks a prospect * Terrace (geology), a step-like landform that borders a shoreline or river floodplain * Terraced house, a style of housing where identical individual houses are cojoined into rows * Terrace, the roof of a building, especially one accessible to the residents for various purposes * Terrace, a sidewalk cafe * Terrace (stadium), standing spectator areas, especially in Europe and South America, or the sloping portion of the outfield in a baseball stadium, not necessarily for seating, but for ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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