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Dorsum Zirkel
Oblique view of Dorsum Zirkel from Apollo 15, taken at a low sun angle Dorsum Zirkel is a wrinkle ridge at northeast of Mons La Hire in Mare Imbrium on the 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 .... It is 193 km long and was named after German geologist Ferdinand Zirkel in 1976. Gazetteer of Planetary Nomenclature, International Astronomical Union (IAU) Working Group for Planetary System Nomenclature (WGPSN) Two small craters, La Hire A and B, lie on either side of the dorsum. The large crater Lambert is to t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dorsum Zirkel A15-M-1554 , a star on the back of Capricornus
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Dorsum (plural Dorsa) is a Latin word. In science, it may refer to: Anatomy * Dorsum (anatomy), the upper side of an animal, or the back in erect organisms ** Dorsum humanum, the human back * Dorsum of foot, the top of the foot * Dorsum of hand, the back of the hand * The back of the tongue, which is used for articulating dorsal consonants Other uses * ''Dorsum'' (moth), genus of moths of the family Erebidae * Dorsum (astrogeology), wrinkle ridges found on planets or moons * Theta Capricorni Theta Capricorni, Latinized from θ Capricorni, is a white-hued star in the southern constellation of Capricornus, positioned 0.58° south of the ecliptic. Sometimes, this star is called by the name Dorsum, meaning ''the back (of the goa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wrinkle Ridge
A wrinkle ridge is a type of feature commonly found on lunar maria, or basalt plains. These features are low, sinuous ridges formed on the mare surface that can extend for up to several hundred kilometers. Wrinkle ridges are tectonic features created after the lava cooled and solidified. They frequently outline ring structures buried within the mare, follow circular patterns outlining the mare, or intersect protruding peaks. They are sometimes called ''veins'' due to their resemblance to the veins that protrude from beneath the skin. Wrinkle ridges are named with the Latin designation ''dorsum'' (plural ''dorsa''). The standard IAU nomenclature uses the names of people (generally scientists) to identify wrinkle ridges on the Moon. For example, the Dorsa Burnet are named for Thomas Burnet, and the Dorsum Owen is named after George Owen of Henllys. Wrinkle ridges can also be found on Mars, for example in Chryse Planitia, on several of the asteroids that have been visited by sp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mons La Hire
Mons La Hire is a solitary lunar mountain in the western Mare Imbrium. It is located to the northeast of the crater Euler, and to the west-northwest of Lambert. The selenographic coordinates of this feature are 27.8° N, 25.5° W, and it has a maximum diameter at the base of 25 km. The mountain base has a shape roughly like an arrow head, with the point oriented toward the west-northwest. The peak has a height of 1.5 km above the surface. This feature was named after Philippe de La Hire, a French mathematician and astronomer. Nearby craters Several tiny craters near this mountain have been assigned names by the IAU. These are listed in the table below. Felix and Verne are located to the south of the peak, while the remainder are grouped to the north and northeast. Satellite craters By convention these features are identified on lunar maps by placing the letter on the side of the crater midpoint that is closest to Mons La Hire. La Hire A is on the northeast s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mare Imbrium
Mare Imbrium (Latin ''imbrium'', the "Sea of Showers" or "Sea of Rains", "Sea of Tears") is a vast lava plain within the Imbrium Basin on the Moon and is one of the larger craters in the Solar System. The Imbrium Basin formed from the collision of a proto-planet during the Late Heavy Bombardment. Basaltic lava later flooded the giant crater to form the flat volcanic plain seen today. The basin's age has been estimated using uranium–lead dating methods to approximately 3.9 billion years ago, and the diameter of the impactor has been estimated to be 250 ± 25 km. The Moon's maria (plural of mare) have fewer features than other areas of the Moon because molten lava pooled in the craters and formed a relatively smooth surface. Mare Imbrium is not as flat as it was originally thought, because later events have altered its surface. Origin Mare Imbrium formed when a proto-planet from the asteroid belt collided with the moon during the Late Heavy Bombardment. The impact i ... [...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] |
Ferdinand Zirkel
Prof Ferdinand Zirkel Royal Society of London, FRS(For) HFRSE (20 May 183811 June 1912) was a German geologist and petrography, petrographer. Biography Zirkel was born in Bonn. Educated in his native town, he graduated PhD from the University of Bonn in 1861. His training and initial interest was in mining. In 1860 he traveled to Iceland with William Thierry Preyer, and in 1862 they published ''Reise nach Island im Sommer 1860''. After graduation, Zirkel was engaged in teaching geology and mineralogy in Vienna at the Geological Institution. His journey to Iceland, along with travels to the Faeroe Islands, Scotland and England, and a meeting with Henry Clifton Sorby, led him from mining to the study of microscopical petrography, then a comparatively new science. He became professor of geology in 1863 in the University of Lemberg, in 1868 at the University of Kiel, and in 1870 was made professor of mineralogy and geology in the University of Leipzig. He traveled for study in Fra ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lambert (lunar Crater)
Lambert is a lunar impact crater on the southern half of the Mare Imbrium basin. It was named after Swiss polymath Johann Heinrich Lambert. It lies to the east and somewhat south of the slightly larger crater Timocharis. To the south is the smaller Pytheas, and some distance to the west-southwest is Euler. The crater is relatively easy to locate due to its isolated position on the mare. It has an outer rampart, terraced inner walls, and a rough interior that has a comparable albedo to its surroundings. Instead of a central peak, a small craterler lies at the midpoint of the interior. Just to the south of Lambert's ramparts is the lava-covered rim of Lambert R, a crater that is almost completely covered by the mare. The diameter of this ghost crater is larger than Lambert, but it is difficult to spot except when the Sun is at a very low angle, casting long shadows. Satellite craters By convention these features are identified on lunar maps by placing the letter on the side of th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
McDonald (crater)
McDonald is a small lunar impact crater located in the central Mare Imbrium. It was named after American benefactor William Johnson McDonald and Scottish selenographer Thomas Logie MacDonald. This crater is a cup-shaped feature with a circular rim, and has not been significantly eroded. It lies to the southeast of the slightly larger crater Carlini, in an isolated part of the mare. This feature was identified as 'Carlini B' prior to being renamed by the IAU. References * * * * * * * * * * * External links LTO-40A2 McDonald— 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 historic ... - partial map undisplayed *{{Commonscat-inline Impact craters on the Moon Mare Imbrium ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ridges On The Moon
A ridge or a mountain ridge is a geographical feature consisting of a chain of mountains or hills that form a continuous elevated crest for an extended distance. The sides of the ridge slope away from the narrow top on either side. The lines along the crest formed by the highest points, with the terrain dropping down on either side, are called the ridgelines. Ridges are usually termed hills or mountains as well, depending on size. Smaller ridges, especially those leaving a larger ridge, are often referred to as spurs. Types There are several main types of ridges: ;Dendritic ridge: In typical dissected plateau terrain, the stream drainage valleys will leave intervening ridges. These are by far the most common ridges. These ridges usually represent slightly more erosion resistant rock, but not always – they often remain because there were more joints where the valleys formed or other chance occurrences. This type of ridge is generally somewhat random in orientation, often ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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