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Ulugh Beigh (crater)
Ulugh Beigh is the remnant of a lunar impact crater that is located just to the west of the Oceanus Procellarum. It is located near the northwestern limb of the Moon, and from the Earth it appears foreshortened. Farther to the west is the smaller crater Aston, and to the north is Lavoisier. Both these craters are roughly equidistant from Ulugh Beigh, although Aston appears much closer due to the oblique viewing angle. The rim of this crater has been nearly worn away by impacts, leaving a disintegrated perimeter that is notched and incised by impacts. Ulugh Beigh D lies across the southern part of the floor, and a smaller crater along the western rim shares a common floor with Ulugh Beigh. The interior floor of this crater has been resurfaced by lava, leaving a dark surface with the same albedo as the neighboring mare. The northern part of the crater has a higher albedo than this dark surface, matching the appearance of the terrain to the west of the mare. Ulugh Beigh A is l ... [...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] |
Albedo
Albedo (; ) is the measure of the diffuse reflection of sunlight, solar radiation out of the total solar radiation and measured on a scale from 0, corresponding to a black body that absorbs all incident radiation, to 1, corresponding to a body that reflects all incident radiation. Surface albedo is defined as the ratio of Radiosity (radiometry), radiosity ''J''e to the irradiance ''E''e (flux per unit area) received by a surface. The proportion reflected is not only determined by properties of the surface itself, but also by the spectral and angular distribution of solar radiation reaching the Earth's surface. These factors vary with atmospheric composition, geographic location, and time (see position of the Sun). While bi-hemispherical reflectance is calculated for a single angle of incidence (i.e., for a given position of the Sun), albedo is the directional integration of reflectance over all solar angles in a given period. The temporal resolution may range from seconds (as ob ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sterling Publishing Co
Sterling Publishing Company, Inc. is a publisher of a broad range of subject areas, with multiple imprints and more than 5,000 titles in print. Founded in 1949 by David A. Boehm, Sterling also publishes books for a number of brands, including AARP, Hasbro, Hearst Magazines, and ''USA TODAY'', as well as serves as the North American distributor for domestic and international publishers including: Anova, the Brooklyn Botanic Garden, Carlton Books, Duncan Baird, Guild of Master Craftsmen, the Orion Publishing Group, and Sixth & Spring Books. Sterling also owns and operates two verticals, Lark Crafts and Pixiq. Sterling Publishing is a wholly owned subsidiary of Barnes & Noble, which acquired it in 2003. On January 5, 2012, ''The Wall Street Journal'' reported that Barnes & Noble had put its Sterling Publishing business up for sale. Negotiations failed to produce a buyer, however, and Sterling is reportedly no longer for sale as of March, 2012. In January 2022, Sterling rebranded ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jonathan's Space Report
''Jonathan's Space Report'' (JSR) is a newsletter about the Space Age, hosted at Jonathan's Space Page. It is written by Jonathan McDowell, a Center for Astrophysics Harvard & Smithsonian astrophysicist. It is updated as McDowell's schedule permits, but he tries to publish two issues each month. Originally the website was hosted on a Harvard University account, but was moved in late 2003 to a dedicated domain. Started in 1989, the newsletter reports on recent space launches, International Space Station activities and space craft developments. McDowell's report occasionally corrects NASA's official web sites, or provides additional data on classified launches that aren't available elsewhere. Associated projects on the JSR web site are: * A catalog of all known geosynchronous satellites and their current positions * A listing of satellite launch attempts * A cross-reference between catalog number and international designation of artificial satellites McDowell has long campaigne ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cambridge University Press
Cambridge University Press is the university press of the University of Cambridge. Granted letters patent by Henry VIII of England, King Henry VIII in 1534, it is the oldest university press A university press is an academic publishing house specializing in monographs and scholarly journals. Most are nonprofit organizations and an integral component of a large research university. They publish work that has been reviewed by schola ... in the world. It is also the King's Printer. Cambridge University Press is a department of the University of Cambridge and is both an academic and educational publisher. It became part of Cambridge University Press & Assessment, following a merger with Cambridge Assessment in 2021. With a global sales presence, publishing hubs, and offices in more than 40 Country, countries, it publishes over 50,000 titles by authors from over 100 countries. Its publishing includes more than 380 academic journals, monographs, reference works, school and uni ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
United States Geological Survey
The United States Geological Survey (USGS), formerly simply known as the Geological Survey, is a scientific agency of the United States government. The scientists of the USGS study the landscape of the United States, its natural resources, and the natural hazards that threaten it. The organization's work spans the disciplines of biology, geography, geology, and hydrology. The USGS is a fact-finding research organization with no regulatory responsibility. The agency was founded on March 3, 1879. The USGS is a bureau of the United States Department of the Interior; it is that department's sole scientific agency. The USGS employs approximately 8,670 people and is headquartered in Reston, Virginia. The USGS also has major offices near Lakewood, Colorado, at the Denver Federal Center, and Menlo Park, California. The current motto of the USGS, in use since August 1997, is "science for a changing world". The agency's previous slogan, adopted on the occasion of its hundredt ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
NASA
The National Aeronautics and Space Administration (NASA ) is an independent agency of the US federal government responsible for the civil space program, aeronautics research, and space research. NASA was established in 1958, succeeding the National Advisory Committee for Aeronautics (NACA), to give the U.S. space development effort a distinctly civilian orientation, emphasizing peaceful applications in space science. NASA has since led most American space exploration, including Project Mercury, Project Gemini, the 1968-1972 Apollo Moon landing missions, the Skylab space station, and the Space Shuttle. NASA supports the International Space Station and oversees the development of the Orion spacecraft and the Space Launch System for the crewed lunar Artemis program, Commercial Crew spacecraft, and the planned Lunar Gateway space station. The agency is also responsible for the Launch Services Program, which provides oversight of launch operations and countdown management f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chaghatai Language
Chagatai (چغتای, ''Čaġatāy''), also known as ''Turki'', Eastern Turkic, or Chagatai Turkic (''Čaġatāy türkīsi''), is an extinct Turkic literary language that was once widely spoken across Central Asia and remained the shared literary language there until the early 20th century. It was used across a wide geographic area including parts of modern-day Uzbekistan, Xinjiang, Kazakhstan, and Kyrgyzstan. Literary Chagatai is the predecessor of the modern Karluk branch of Turkic languages, which include Uzbek and Uyghur. Turkmen, which is not within the Karluk branch but in the Oghuz branch of Turkic languages, had been heavily influenced by Chagatai for centuries. Ali-Shir Nava'i was the greatest representative of Chagatai literature. Chagatai literature is still studied in modern Uzbekistan, where the language is seen as the predecessor and the direct ancestor of modern Uzbek and the literature is regarded as part of the national heritage of Uzbekistan. Etymo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Timurids
The Timurid Empire ( chg, , fa, ), self-designated as Gurkani ( Chagatai: کورگن, ''Küregen''; fa, , ''Gūrkāniyān''), was a PersianateB.F. Manz, ''"Tīmūr Lang"'', in Encyclopaedia of Islam, Online Edition, 2006 Turco-Mongol empire that dominated Greater Iran in the early 15th century, comprising modern-day Iran, Iraq, Afghanistan, much of Central Asia, the South Caucasus, as well as most of contemporary Pakistan and parts of contemporary North India and Turkey. The empire was founded by Timur (also known as Tamerlane), a warlord of Turco-Mongol lineage, who established the empire between 1370 and his death in 1405. He envisioned himself as the great restorer of the Mongol Empire of Genghis Khan, regarded himself as Genghis's heir, and associated much with the Borjigin. Timur continued vigorous trade relations with Ming China and the Golden Horde, with Chinese diplomats like Ma Huan and Chen Cheng regularly traveling west to Samarkand to buy and sell goods. The e ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lava
Lava is molten or partially molten rock (magma) that has been expelled from the interior of a terrestrial planet (such as Earth) or a moon onto its surface. Lava may be erupted at a volcano or through a fracture in the crust, on land or underwater, usually at temperatures from . The volcanic rock resulting from subsequent cooling is also often called ''lava''. A lava flow is an outpouring of lava during an effusive eruption. (An explosive eruption, by contrast, produces a mixture of volcanic ash and other fragments called tephra, not lava flows.) The viscosity of most lava is about that of ketchup, roughly 10,000 to 100,000 times that of water. Even so, lava can flow great distances before cooling causes it to solidify, because lava exposed to air quickly develops a solid crust that insulates the remaining liquid lava, helping to keep it hot and inviscid enough to continue flowing. The word ''lava'' comes from Italian and is probably derived from the Latin word ''labes ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ulugh Beg
Mīrzā Muhammad Tāraghay bin Shāhrukh ( chg, میرزا محمد طارق بن شاہ رخ, fa, میرزا محمد تراغای بن شاہ رخ), better known as Ulugh Beg () (22 March 1394 – 27 October 1449), was a Timurid sultan, as well as an astronomer and mathematician. Ulugh Beg was notable for his work in astronomy-related mathematics, such as trigonometry and spherical geometry, as well as his general interests in the arts and intellectual activities.Science in Islamic civilisation: proceedings of the international symposia: "Science institutions in Islamic civilisation", & "Science and technology in the Turkish and Islamic worl/ref> It is thought that he spoke five languages: Arabic, Persian, Turkic, Mongolian, and a small amount of Chinese. During his rule (first as a governor, then outright) the Timurid Empire achieved the cultural peak of the Timurid Renaissance through his attention and patronage. Samarkand was captured and given to Ulugh Beg by ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lavoisier (crater)
Lavoisier is a lunar impact crater that is located near the northwestern limb of the Moon, at the western edge of the Oceanus Procellarum. It is named after the French chemist Antoine Lavoisier. It is located to the southwest of the crater von Braun and southeast of Bunsen. Due south of Lavoisier is the disintegrated crater Ulugh Beigh. This is a worn crater formation with several small craters attached to the exterior of the rim. Lavoisier F is a distorted crater that shares a common rim along the southeastern side of Lavoisier. The southern rim is extended outward, and is overlaid by the small crater Lavoisier W. Lavoisier S is a worn crater that is attached to the northwestern rim. There are also a pair of small craters along the outer eastern rim. A small crater has incised a short section along the northern rim. The interior of this floor-fractured crater is notable for the curving ridge that parallels the northwestern inner wall. The remainder of this circular form can ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
