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Pettit (lunar Crater)
Pettit is a lunar impact crater that lies near the western limb of the Moon. It was named after American astronomer Edison Pettit. In this location the crater is viewed nearly from the side by observers on Earth, and visibility can be significantly affected by libration effects. The crater lies among the rugged features of the Montes Rook, the inner ring of mountains that surround the Mare Orientale impact basin. It is nearly a twin of the crater Nicholson which lies less than one crater diameter to the northeast. Another similar formation is Wright almost due south. The rim of this crater has something of the appearance of a rounded hexagon, with slightly flattened rims to the east and west. The rim is sharp-edged, and the inner wall material has slumped down to lie in a pile around the base. The interior floor is a rugged jumble, with a small central peak and hills to the north and west. Beyond the rim lies rugged terrain to the north and west, while the ground becomes less jumb ... [...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] |
Petit (crater)
Petit is a small, bowl-shaped lunar impact crater that is located on the northwestern edge of the Mare Spumans. The crater has a prominent ray system. The name is appropriate, since ''petite'' means small in French. But it was actually named in honor of Alexis Thérèse Petit, a French physicist. The crater lies to the south of the crater Townley, and east of Condon. Farther to the northwest is Apollonius. Petit was previously designated Apollonius W before being given a name by the IAU. External links LTO-62C4 Condon— L&PI topographic map In modern mapping, a topographic map or topographic sheet is a type of map characterized by large- scale detail and quantitative representation of relief features, usually using contour lines (connecting points of equal elevation), but histori ... References * * * * * * * * * * * * {{Authority control Impact craters on the Moon ... [...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] |
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] |
Pettit (Martian Crater)
Pettit Crater is a crater in the Amazonis quadrangle of Mars, located at 12.39° north latitude and 173.87° west longitude. Pettit lies west of the giant volcano Olympus Mons. It is 92.49 km in diameter and was named after Edison Pettit, an American astronomer (1890–1962). Gallery Image:Pettit Crater Rim.JPG, Pettit Crater Rim, as seen by HiRISE. Image:Map of Amazonis.JPG, Map of Amazonis. Nicholson crater sits right on equator. Wikipettit.jpg, CTX camera (on Mars Reconnaissance Orbiter) image of central peak of Pettit Crater. Some dark slope streaks are visible. See also * List of craters on Mars __NOTOC__ This is a list of craters on Mars. Impact craters on Mars larger than exist by the hundreds of thousands, but only about one thousand of them have names. Names are assigned by the International Astronomical Union after petitioning by ... References {{Portal bar, Solar System Amazonis quadrangle Impact craters on Mars ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Shuleykin (crater)
Shuleykin is a small lunar impact crater that lies to the south of Mare Orientale, within the ring-shaped Montes Rook. It is located just on the far side of the Moon, but this area can be viewed from the Earth during periods of favorable libration In lunar astronomy, libration is the wagging or wavering of the Moon perceived by Earth-bound observers and caused by changes in their perspective. It permits an observer to see slightly different hemispheres of the surface at different tim ... and lighting, although it can only be seen from the edge. This crater was formed following the Orientale impact event, and so is younger. It has a circular, sharp-edged rim and inner walls that slope down to the small interior floor. It has not been noticeably eroded by subsequent impacts. References * * * * * * * * * * * * {{refend Impact craters on the Moon ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
International Astronomical Union
The International Astronomical Union (IAU; french: link=yes, Union astronomique internationale, UAI) is a nongovernmental organisation with the objective of advancing astronomy in all aspects, including promoting astronomical research, outreach, education, and development through global cooperation. It was founded in 1919 and is based in Paris, France. The IAU is composed of individual members, who include both professional astronomers and junior scientists, and national members, such as professional associations, national societies, or academic institutions. Individual members are organised into divisions, committees, and working groups centered on particular subdisciplines, subjects, or initiatives. As of 2018, the Union had over 13,700 individual members, spanning 90 countries, and 82 national members. Among the key activities of the IAU is serving as a forum for scientific conferences. It sponsors nine annual symposia and holds a triannual General Assembly that sets policy ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wright (lunar Crater)
Wright is a lunar impact crater that is located near the western limb of the Moon. It lies on the irregular plain between the Montes Cordillera and Montes Rook, two ring-shaped mountain ranges that surround the Mare Orientale. Just to the southeast of the crater is the slightly larger crater Shaler. To the north of Wright is the crater Pettit. The outer rim of Wright is somewhat irregular, with an outward bulge along the northeastern side. The rim is sharp-edged, and the inner walls have slumped down to form a shelf along parts of the side. The interior floor is uneven surfaced, particularly in the eastern half. The satellite crater Wright A lies about half a crater diameter to the south-southwest, along the edge of the Montes Cordillera. Due to the location of this crater, it is viewed nearly edge-on from Earth, limiting the amount of detail that can be seen. In addition, this crater can sometimes become hidden from sight due to libration of the Moon in its orbit. Satellit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Edison Pettit
Edison Pettit (September 22, 1889 – May 6, 1962) was an American astronomer. He was born in Peru, Nebraska. Pettit received his bachelor's degree from the Nebraska State Normal School in Peru. He taught astronomy at Washburn College in Topeka, Kansas from 1914 to 1918. He married Hannah Steele Pettit, who was an assistant at Yerkes Observatory, and received his Ph.D. from the University of Chicago in 1920. Shortly after he became a staff member at Mount Wilson Observatory. He initially specialized in solar astronomy and built his own thermocouples. He also made visual observations of Mars and Jupiter. Even after his retirement he continued to make spectrographs for various observatories in the machine shop in his home. Pettit crater on the Moon and another Crater 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 produc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nicholson (lunar Crater)
Nicholson may refer to: People *Nicholson (name), a surname, and a list of people with the name Places Australia * Nicholson, Victoria * Nicholson, Queensland * Nicholson County, New South Wales * Nicholson River (other) * Nicholson Road, Perth * Nicholson Street, Melbourne Hong Kong * Mount Nicholson, Hong Kong Island New Zealand * Port Nicholson, former name of Wellington Harbour, New Zealand United States * Nicholson, Georgia * Nicholson Island (Pennsylvania) * Nicholson, Mississippi * Nicholson, Pennsylvania * Nicholson, Wisconsin * Nicholson Township, Fayette County, Pennsylvania * Nicholson Township, Wyoming County, Pennsylvania * Dr. Malcolm Nicholson Farmhouse, a historic farmhouse in Havana, Florida Craters *Nicholson crater, in Canada *Nicholson (lunar crater) *Nicholson (Martian crater) Other uses * Crest Nicholson, British housebuilding company * ''Fanny Nicholson'', Australian sailing ship that sank in 1874 * Nicholson's, a brewery in Maidenhead from 18 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
