| Risultati della ricerca nelle immagini - "Outcrops" |
081-Craters-Sextilia_Crater-PIA15085-PCF-LXTT.jpgSextilia Crater and Surroundings (Absolute Natural Colors; credits for the additonal process. and color.: Dr Paolo C. Fienga - Lunar Explorer Italia)158 visiteThis Dawn FC (framing camera) image is centered on the Sextilia Crater in Vesta's Southern Hemisphere. Craters on Vesta are named after Vestal virgins, priestesses of the Roman goddess Vesta. The Sextilia Crater is a large, approximately 15 Km diameter and distinctive Crater, therefore its name was used to name the whole Quadrangle in which it is located. Sextilia Crater is distinctive because it has a fresh, sharp Rim which is also scalloped in shape. It also contains Rocky Outcrops of both bright and dark material. These originate along its Rim and sides and slump towards the center of the Crater. There are some especially large slumps of material on the right side of it. Surrounding Sextilia Crater is the Hummocky (---> wavy/undulating) Terrain of Vesta's Southern Hemisphere and some dark and bright Rayed Craters.
This image is in Vesta's Sextilia Quadrangle and the center Latitude and Longitude of the image is 39,5° South and 155,7° East. NASA's Dawn Spacecraft obtained this image with its framing camera on October 10th 2011. This image was taken through the camera's clear filter. The distance to the surface of Vesta is approx. 702 Km and the image has a resolution of about 70 meters per pixel. This image was acquired during the HAMO (High Altitude Mapping Orbit) phase of the mission.MareKromium
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0850-TheFallenAngel.jpgThe Fallen Angel197 visiteSe ricordate, qualche tempo fa (svariati mesi, a dire il vero), si fece un gran parlare (ed un "gran scrivere"!, su Internet e su qualche rivista "specializzata"... - della "Astronave Sepolta sulla Luna" ed individuata durante la fantamissione NASA "Apollo 20".
Parole, parole e parole e poi, alla fine, il tutto, come accade nel 99,99% dei casi di questo tipo, si risolse in una colossale bufala alla quale credettero (e/o sulla quale specularono) tantissime persone: Appassionati, Entusiasti (e loro li possiamo anche perdonare) e qualche "Esperto" di Ufologia (i quali, invece, sono del tutto imperdonabili).
Perchè? Perchè l'Astronave sepolta sulla Luna era un "falso radicale", ossìa un "One-hundred-percent Fake".
Oggi, a distanza di un (bel) pò di tempo, il nostro straordinario Dr Faccin ci propone questo nuovo ed incredibile dettaglio (estrapolato da un frame MRO, nella sua versione in JP2000) il quale, a differenza della "bufala dell'Apollo 20", è ASSOLUTAMENTE GENUINO.
Di che si tratta? Si direbbe una sorta di cilindro dall'aspetto tutt'altro che naturale - a dall'albedo elevata - il quale giace sul suo lato lungo, semisepolto e, dunque, praticamente invisibile, tra le dune e gli outcrops di una Regione peri-equatoriale Marziana che, per il momento, non citiamo (ma se la riconosceste Voi, allora...Complimenti!).
Si tratta dell'"evidenza" di un (antico) manufatto "indigeno" (magari il residuo affiorante di un sistema di tubazioni sotterranee destinate al trasporto di acqua, gas o altra fonte energetica locale)?
E', effettivamente, il frammento di una astronave (o di un altro velivolo equipollente) andata distrutta a seguito dell'impatto con il Pianeta Rosso?
O è solamente un rilievo naturale, ma dalle forme bizzarre, che ci sta traendo in inganno?
Lo sapete: una risposta CERTA non esiste. Oggi.
Osservate, valutate e poi, se volete, provate a rispondere Voi stessi a queste domande. Noi, come sempre, aspettiamo le Vostre idee, opinioni e teorie.MareKromium
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20010206full.jpgBoulders, Outcrops and the "Skyline" of 433-Eros52 visiteUn frame - semplicemente - bellissimo, ad elevata risoluzione (osservate i macigni che si trovano a ridosso dell'orizzonte e del Terminatore se volete apprezzare pienamente la qualità - ALTA! - del frame).MareKromium
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APOLLO 14 AS 14 68-9452.jpgAS 14-68-9452 - "Weird" Lunar Outcrops113 visitenessun commento
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APOLLO 14 AS 14-68-9414.jpgAS 14-68-9414 - Lunar "Outcrop"193 visiteUn affioramento Lunare ("outcrop") del tutto simile ad altri outcrops che abbiamo di recente visto su Marte, alle pendici delle Columbia Hills. Molto curiosa ed intrigante la forma di questo piccolo rilievo: da guardare ancora con attenzione.
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APOLLO 14 AS 14-68-9450.jpgAS 14-68-9450 - Boulders?144 visiteUn'immagine stupenda relativa ad un gruppo di macigni dalle forme davvero stranissime (o che si tratti, anche in questo caso, di "outcrops"). Ma non è tutto: osservate molto attentamente questa immagine in rapporto alla AS 14-68-9452...
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APOLLO 15 AS 15-9328.jpgAS 15-9328 - Bessel Crater52 visiteOutcrops of layered rock are strikingly evident in the upper part of the far wall of the crater Bessel (17- Km diameter) in South-Central Mare Serenitatis. The outcrop is most evident where it forms shadows; however, the dark debris that streams downslope from the layered rock is visible even on parts of the crater wall where the Sun has washed out all details of relief. The outcrop is at a uniform distance below the crater rim, indicating that the strata are horizontal. Thus, Bessel furnishes convincing evidence that mare surfaces are underlain by dark layered rock. The dark rock is now known to be basalt that accumulated as successive flows or layers of lava.
Bessel is youthful enough that boulders are abundant on its rim and floor.
An anomalously high number of boulders is visible in and around the 750-m diameter crater (arrow) on the floor.
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APOLLO 16 AS 16-4531.jpgAS 16-4531 - Teophilus' "Peak"53 visiteA detailed view of part of the central peak complex of Theophilus. Central peaks are typical of most young, large impact craters on the Moon-and also of many manmade craters on Earth. From experimental data using controlled explosions, central peaks are known to consist of bedrock originally lying below the crater floor that, during the explosion, was uplifted, faulted, and folded by shock wave action. The irregular light-toned mountainous mass projecting above the floor of Theophilus is split into at least three enormous blocks separated by V-shaped structural valleys. Four or five circular craters without a prominent raised rim are located near or at the bases of the steep slopes. If these craters are endogenic vents rather than impact craters, their presence further suggests structural control along major fault planes. The planar walls of the northwest-trending valley contrast with other sloping surfaces of the central peak complex. They are steeper and, except for a few outcrops of protruding bedrock, are marked by linear grooves not unlike slickensides on many fault planes on Earth. Rock chutes do not seem to be a likely explanation for the grooves because there are no talus deposits or blocks at their lower ends. The debris cover is thin enough along the southern valley wall (top of picture) to show that the southern mountain block consists of layered rocks-at least five thick, light-toned layers alternate with thin, dark layers.
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APOLLO 17 AS 17 133-20336.jpgAS 17-133-20336 - Moonscape with boulders, rocks and debris147 visiteNei frames precedenti, dopo la prima immagine dedicata all'ombra di un Astronauta e ad un macigno di notevoli dimensioni non lontano da lui, abbiamo incontrato una serie di curiose "sporgenze" - note anche come "affioramenti" o "outcrops" - che caratterizzavano l'interno e le immediate vicinanze di un piccolo cratere. Si tratta di un fenomeno davvero interessante e,a suo modo, anomalo. Peccato che le immagini sono quasi tutte fortemente sovra-esposte. In questo frame, possiamo vedere il LR e, in primissimo piano, accanto a sassi e rocce di varie dimensioni, una serie di chiare impronte lasciate dagli "stivali" degli Astronauti.
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APOLLO 17 AS 17 144.22027 - HR-1.jpgAS 17-144-22027 - White hills, distant outcrops, dark sky87 visiteUn'altra immagine della Collezione di Kipp Teague: un frame bellissimo, senza dubbio ma, se provate a confrontarlo con altri frames della serie AS 17 (Reserved Area) potrete notare come il (pur) ottimo lavoro di "pulitura&restauro" operato da Kipp finisce con lo snaturare il VERO Paesaggio Lunare. In che senso? Nel senso che il bianco intenso delle colline - esaltato dalla pulizia - cancella la profondità di campo ed il nero del cielo (palesemente "piallato" per eliminare i difetti - o presunti tali...) è assolutamente troppo denso e compatto per essere naturale. D'altra parte, come lo stesso Dr Schmitt ce lo ha recentemente ricordato, il panorama lunare è fatto di contrasti: affilati, netti, unici.
Il Sole è infinitamente più brillante di come lo possiamo vedere qui sulla Terra (anche in alta quota), e le stelle "riempiono ogni spazio della notte lunare". Certo, nelle immagini standard, la luce delle colline può "lavar via" tanti dettagli, ma nelle elaborazioni di Kipp viene "lavato via" quasi tutto...
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APOLLO 17 AS 17-3081.jpgAS 17-3081 - Pytheas Crater (HR)52 visiteThe Apollo 17 Panoramic Camera provided this high-resolution, enlarged view of the South Wall of Pytheas. Pytheas is about the same size as Bessel, but is located in South-Central Mare Imbrium, almost 1100 km West of Bessel.
The outcrops in the walls of the two craters are remarkably similar.
These and the many other craters in mare areas that contain outcrops of dark horizontally layered rock demonstrate the moonwide uniformity of conditions in the upper part of the mare basins.
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APOLLO 17 AS 17-3125.jpgAS 17-3125 - Rimless crater53 visiteThe very young rimless crater near the center of this picture is located near the area where Oceanus Procellarum and Mare Imbrium join. The crater apparently formed in regolith-covered mare basalt. It differs from lunar impact craters of comparable size and age by its lack of a raised rim, surrounding ejecta deposit, or associated secondary impact craters. In addition, its interior walls do not show the steep slopes with craggy outcrops of rock in their upper parts, nor the streams of debris-avalanche deposits and talus that are usually seen in the walls of impact craters of comparable age and size.
Judging from the clear and sharply formed pattern of concentrically curved grooves and scarps that surround the hole, the material near this depression has apparently subsided into a subsurface void. Because of the extreme rarity and inferred short lifetime of steep slopes on the Moon, the latest subsidence must have taken place very recently, after most of the 50- to 300- m diameter craters that densely pepper the nearby mare surface were formed. Movement of the regolithic debris layer during subsidence apparently smoothed out most, if not all, of the craters that must have existed near the depression. Now the depression is surrounded by low, curved fault scarps and narrow, curved grooves that may be fault troughs (grabens) or may represent drainage of regolithic debris into cracks that opened in the underlying sagging basalt rock. The few craters that have formed on the subsided surface compare in density to the craters formed on the cluster (arrow) of Aristarchus secondary impact craters and associated herring- bone ridges; comparable ages for the Aristarchus secondary features and the depression are thus indicated. The subsidence was triggered either by the ground shock or seismic wavetrain generated when Aristarchus was formed 300 km to the west, or by the impacts of the secondary features.
The subdued depression in the upper left may be a similar older feature that was flooded by a later lava flow that now covers the area. The density of craters within the depression and the density on the surrounding lava are comparable. Alternatively, the subsidence there may have been incomplete; however, there is no sign that this subsidence is as young as that in the deeper crater
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