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Topic: Posidonius (crater)

	Posidonius - Crystalinks
		In Stoic physics, Posidonius advocated a theory of cosmic "sympathy", the organic interrelation of all appearances in the world, from the sky to the earth, as part of a rational design uniting humanity and all things in the universe, even those that were temporally and spatially separate.
		Posidonius' orrery, according to Cicero, exhibited the diurnal motions of the sun, moon, and the five known planets.
		Posidonius met Pompey when he was Rhodes's ambassador in Rome and Pompey visited him in Rhodes twice, once in 66 BCE during his campaign against the pirates and again in 62 BCE during his eastern campaigns, and asked Posidonius to write his biography.
	www.crystalinks.com /posidonis.html (1970 words)

	Posidonius
		The Chacornac crater is attached to the southeast rim, and to the north is Daniell crater.
		The crater ramparts can still be observed to the south and east of the crater rim, and to a lesser degree to the north.
		The northeast rim is interrupted by the smaller crater 'Posidonius B'.
	www.astrosurf.com /grenier/best/posidonius.htm (473 words)

	Moon's Gallery
		A near vertical view of the crater Tsiolkovsky on the lunar farside, as photographed by the Fairchild metric camera in the SIM bay of the Apollo 15 Command/Service Module in lunar orbit.
		The coordinates of the crater's central peaks are 128 degrees east longitude and 20 degrees south latitude.
		The coordinates of the center of Aristarchus crater are 47.5 degrees west longitude and 23.6 degrees north latitude.
	www.penpal.ru /astro/Apollo15.shtml (1088 words)

	Posidonius Lunar Ray
		Posidonius +419,+526 - A majestic ring, 62 miles in diameter, with low and narrow walls, rising at their highest point 6,000 feet about the light interior and broad on the west, but especially narrow on the east, where they rapidly thin and end in a distinct break.
		There are smaller craters on the south, one of which Laméch declared to be subject to occasional obscuration in a manner similar to what Schröter found in connection with the great crater A. On the northern portion are numerous hills, craterlets and a low ring.
		He also found a crater to the north-east of A, and five shallow clefts from the western part of the inner ring toward the rough circle of hills west of A. There was also a short branch cleft to the great cleft on the northern part of the interior, and many mounds or landswells.
	www.lunar-occultations.com /rlo/rays/posidonius.htm (877 words)

	View of crater Posidonius at edge of Sea of Serenity seen by Apollo 15 (Site not responding. Last check: 2007-11-03)
		An oblique view of a portion of the large crater Posidonius at the northeastern edge of the Sea of Serenity, as photographed from the Apollo 15 spacecraft in lunar orbit.
		Posidonius P is in the corner of the picture.
		The much smaller crater nearby is Posidonius F. The crater inside Posidonius is Posidonius A. Rima Posidonius II extends along inside Posidonius.
	www.apolloexplorer.co.uk /photo/html/as15/10075722.htm (113 words)

	Hitchhiker's Guide to Rukl Chart 14 (Site not responding. Last check: 2007-11-03)
		Crater Hercules, and its companion Atlas to the east, are "landmark" features, easily recognized and useful for orientation.
		There is a small crater near the center of the much larger one, this little crater is Posidonius A and it is offset within the main crater to the south.
		Posidonius is criss-crossed by rilles, and there are also rilles arcing just inside the crater walls; but there's also a mountain range inside the east wall which can be confused with a rille in some lights.
	www.shallowsky.com /moon/rukl14.html (500 words)

	Posidonius (via CobWeb/3.1 planetlab2.isi.jhu.edu) (Site not responding. Last check: 2007-11-03)
		The albedo of central craters (Posidonius A and Posidonius C) increased during the lunar phase.
		We interpret these data to mean that cratering event at Posidonius penetrated through the mare fill and exposed underlying upland material.
		In this image are visible several probably domes or hills near Posidonius A. Furthermore a fine network of rilles between Posidonius A and the east wall was recorded.
	www.glrgroup.org.cob-web.org:8888 /tlp/posidonius.htm (712 words)

	[No title]
		Measure the crater diameter D with the calipers to (1 mm.
		One theory is called the impact-explosion analogy, in which it is assumed that the crater formed by a projectile with kinetic energy E has the same size as a crater formed by an explosion releasing the same amount of energy.
		Assuming the crater is roughly spherical (Figure 2), then the volume of surface material removed to form the crater is proportional to D3.
	departments.colgate.edu /physics/research/PhysicsEd/Lab1craters.doc (1303 words)

	Observing The Sky » Moon: Day 20 - “Flooding Posidonius” (Site not responding. Last check: 2007-11-03)
		So, the crater of Posidonius (100.5 km) is flooding with darkness within, though it has a bright bold rim.
		Crater Plinius (43 km) at the south side of the Mare is a dark hole with only the top of its eastern wall illuminated.
		The same can be said of larger crater Theophilus (100 km) further south, as the trio of craters it is a part of is bold and most striking.
	www.lpod.org /ots/?p=1548 (265 words)

	Mare Serenitatis (Site not responding. Last check: 2007-11-03)
		The 2 large craters to the north of Mare Serenitatis are Eudoxus and Aristoteles.
		On the southern rim of the Mare is the crater Menelaus, with a ray stetching across the Mare, while further to the west is the crater Manilius.
		The large shallow crater on the eastern (left) shore of the maria is Posidonius.
	www.montgomerycollege.edu /faculty/~mclark/public_html/moonms.htm (166 words)

	Астронет > Posidonius: Rilles and Uplift
		Posidonius is a beacon of interest along the otherwise bland north-eastern shore of Serenitatis.
		The large (95 km wide, 2.3 km max depth crater may have originally looked like Copernicus with broad terraced walls and a scattering of peaks centered on a deep, flat floor.
		As this excellent photo by Jim Phillips shows the inner walls are narrow ridges (at least on the mare side), the floor is shallow, wide and covered with arcuate mountains, hills and rilles.
	www.astronet.ru:8100 /db/msg/1200242 (172 words)

	Lunardrawings - Page: 3 of 7
		This is the crater Copernicus again, this time in the last rays of the setting sun with most of the crater in deep shadow.
		This is a drawing of the crater Eudoxus (top) and the broken ramparts of Alexander (the group of brillantly lit semi-circular mountains).
		The crater Maginus (top) still filled with a pool of lunar night and the odd squarish shaped crater Orontius (middle of the drawing) is overlapped by the crater Huggins which is in turn overlapped by the crater Nasireddin.
	richhhandy.tripod.com /lunardrawings_003.htm (326 words)

	Posidonius (crater) - Wikipedia, the free encyclopedia
		Posidonius is a lunar impact crater that is located on the western edge of Mare Serenitatis, to the south of Lacus Somniorum.
		The rim of Posidonius is shallow and obscured, especially on the western edge, and the interior has been overlaid by a lava flow in the past.
		Within the crater rim, offset just to the west of center is another smaller crater 'Posidonius A'.
	en.wikipedia.org /wiki/Posidonius_(crater) (344 words)

	NexStar 50 Lunar Club Observation Log - Ken Munson
		Crater to the southwest, Cyrillus, appears to be older as it has at least one good impact crater on its floor and the walls appear more eroded, probably from small impacts.
		The crater appears to have been flooded with later flows, almost to the height of the crater rim.
		Shickard is a big crater to the northwest of Bailly and it has a distinctively dark floor with a band of bright material across the middle.
	www.nexstarsite.com /NS50ClubLogs/MunsonKenLunar.htm (1862 words)

	Shoestring Astronomy - L20 - Posidonius (Site not responding. Last check: 2007-11-03)
		New craters look very fresh and retain most of the features they had soon after the impact event that created them.
		Posidonius is a one of the easiest to observe members of a less common class of crater, the floor-fractured crater.
		These craters retain some of their original features, but have a fractured floor that is usually higher in the middle.
	www.shoestringastronomy.com /lunar/L020.htm (172 words)

	Lake County Astronomical Society NightTimes (Site not responding. Last check: 2007-11-03)
		At this time, the eroded crater Posidonius is prominent.
		This crater was described by one observer as a "light, eliptical pancake on the dark mare plain" because of its immediate appearance as a large, smooth, somewhat raised circle.
		Hugging the bottom border of the image here is the crater Littrow, near which the Apollo 17 lunar module landed on December 11, 1972.
	www.bpccs.com /lcas/Articles/moonsren.htm (200 words)

	TRANSIENTI
		Lena and Salimbeni recorded the presence of a red and dark area to the north and west of the crater.
		Bright spots are due to relatively recent impact craters which have exposed immature soils.
		Furthermore a fine network of rilles between Posidonius A and the east wall was recorded.
	digilander.libero.it /gibbidomine/posidonius.htm (700 words)

	3towers Observatory Moon (Site not responding. Last check: 2007-11-03)
		On its Northern rim is the crater Goodacre.
		The crater with the central peak is Pythagoras.
		Contiguous to its Southern rim is the elongated crater Amundsen.
	www.3towers.com /3towersObservatoryMoon.htm (2067 words)

	Apollo Flight Journal - Apollo 15 Flight Image Library (Site not responding. Last check: 2007-11-03)
		Linné, and Hornsby craters with Krishna depression and Dorsum von Cotta, Dorsum Owen, and Dorsum Gast.
		Crater Conon is at the bottom of the frame, Rima Hadley and Hadley C crater are near the centre and north of the Fresnel Rilles, the fading rays from the large crater Autolycus are visible on the surface of Mare Imbrium.
		Tacquet A, Cape Acherusia, Craters Tacquet A, MacLear A, Menelaus, and Bessel.
	www.hq.nasa.gov /office/pao/History/ap15fj/a15images.htm (2486 words)

	Record of Lunar Observation (Site not responding. Last check: 2007-11-03)
		Closer study of Posidonius at 240x magnification, showed it to be very similar in appearence to the crater Gassendi, which borders Mare Crisium (see observation of 8th Feb 2001).
		Perhaps a large crater may have formed within Posidonius, prior to the flooding of them both with lava.
		Near the centre of Posidonius is the relatively tiny (11km diameter) simple crater Posidonius A, with a small grouping of mountain peaks to its left.
	users.eggconnect.net /iknight/ob12.htm (180 words)

	Astro Photography -
		The Eratosthenes crater is 35 miles in diameter with 10,800' high walls with adjacent mountain range peaking at 16,400'
		The craters Aristoteles and Eudoxus are 53 and 41 miles in diameter
		The crater Posidonius is 58 miles in diameter in the corner of Mare Serenitatis which is 394 miles across
	www.wd4sel.com /solarsystem.htm (584 words)

	AS15-91-12366 (Site not responding. Last check: 2007-11-03)
		The large (approximately 100-km) crater Posidonius is filled with mare lava to a level higher than the surrounding surface of Mare Serenitatis.
		The most interesting and perplexing feature of this crater is Rima Posidonius II - the highly sinuous rille that follows a devious course from the north rim of the crater at upper right (outside the photograph) through the breach in the crater rim at center.
		The fluid involved probably was emitted from the craterlike depression at the head of the rille in the crater's north wall.
	www.astrosurf.com /lunascan/AS15-91-12366.htm (185 words)

	Clear Skies On Demand - an astronomy blog
		Near the centre of Posidonius you can see a small crater, Posidonius A, surrounded by a few hills.
		Posidonius marks the north-eastern border of Mare Serenitatis.
		North of Somniorum lies Lacus Mortis with the crater Burg at its centre.
	www.backyard-astro.com /blog/index.php/weblog/serpentine_ridge_posidonius_atlas_and_hercules (188 words)

	Universe Today - What's Up This Week? - October 18 - 24 (Site not responding. Last check: 2007-11-03)
		Its 84 km by 98 km (52 by 61 mile) expanse is easily seen in the most modest of optical instruments and it offers a wealth of detail in its eroded walls and 1768 meter (5800 ft.) central peak.
		Craters Aristotle and Eudoxus to the north will be easily apparent, along with the Caucasus and Apennine mountain range.
		As one of the most "perfect circles" on the Moon, the south wall of Gassendi has been eroded by lava flows over a 48 km (30 mile) expanse and offers a great amount of details to telescopic observers on its ridge and rille covered floor.
	www.universetoday.com /am/publish/printer_whats_up_oct_18_24.html (1443 words)

	LPOD lunar photo of the day
		While looking at Clementine images of the rille north-east of Posidonius I noticed for the first time the strange floor of the crater Daniell.
		This is an elongated crater 23 km across but 30 km long - it looks like massive slumps of the southern rim caused the lengthening.
		This may be but I am surprised that the pyroclastic dark material is tightly limited to the plateau and not noticeably on the surrounding slumps, rim or outside terrain.
	www.lpod.org /archive/2004/01/LPOD-2004-01-09.html (299 words)

	New Page 1 (Site not responding. Last check: 2007-11-03)
		The long rille shown above Posidonius in this view is Rima G Bond, running a distance of over 90 miles at an average width of 2 miles.
		The unusual double crater to the upper left of frame center is Boussingault.
		The two large craters at frame left that are just emerging into the morning light are Aristoteles and Eudoxus.
	www.digital-flight.com /thebigeye/page_17.htm (224 words)

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