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PHOE-SOL143-lg40723-40724-40725-2.jpgMicroscopic Vastitas - Sol 143 (Superdefinition and possible True Colors; credits: Dr G. Barca)60 visitenessun commentoMareKromium
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The_CTA-1_Nebula.jpgDark Pulsar in CTA 160 visite"...Non domus et fundus, non aeris acervus et auri aegroto corpore domini febres deduxit..."
(Orazio)
"...Non esiste casa, nè podere, nè mucchio d'oro o di bronzo che possa scacciare le malattie..." (trad. libera)MareKromium
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PSP_009927_1750_RED_abrowse-01.jpgExposed Layers in Gale Crater (EDM- Enhanced Natural Colors; credits: Lunexit)60 visiteThis edm is a small portion of a HiRISE image detailing the fine-scale layering evident in the upper mound. The layered deposits can be divided into 2 types: a lower mound with near-horizontal, flat layers, and an upper mound with more numerous, thinner layers (some of which have greater degree of tilt than the lower layers).
The origin of these thin, repetitive layers is unknown, but they likely reflect environmental changes that occurred while the layers were being deposited.
Today, erosion by wind scour has shaped them into the stair-step pattern that is reminiscent of parts of the American South-West.MareKromium
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OPP-SOL1671-1P276536359ESF90__P2456R7M1.jpgUnusually-looking small rock, near Victoria's Outer Rim (natural colors; credits: Lunexit)60 visitenessun commentoMareKromium
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IC-5067-3d.jpgIC-5067 - Reflection Nebula60 visiteMareKromium
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The_Veil_Nebula.jpgThe Veil Nebula60 visite"...Et genus, et formam, Regina Pecunia donat..."
(Orazio)
"...Sua Maestà il Denaro fa l'uomo nobile e bello..." (trad. libera)MareKromium
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ARP-147.jpgARP 14760 visiteJust a couple of days after the orbiting observatory was brought back online, Hubble aimed its prime working camera, the Wide Field Planetary Camera 2 (WFPC2), at a particularly intriguing target, a pair of Gravitationally Interacting Galaxies called Arp 147.
The image demonstrated that the camera is working exactly as it was before going offline, thereby scoring a "perfect 10" both for performance and beauty.
The two galaxies happen to be oriented so that they appear to mark the number 10. The left-most galaxy, or the "one" in this image, is relatively undisturbed apart from a smooth ring of starlight. It appears nearly on edge to our line of sight. The right-most galaxy, resembling a zero, exhibits a clumpy, blue ring of intense star formation.
The blue ring was most probably formed after the galaxy on the left passed through the galaxy on the right. Just as a pebble thrown into a pond creates an outwardly moving circular wave, a propagating density wave was generated at the point of impact and spread outward. As this density wave collided with material in the target galaxy that was moving inward due to the gravitational pull of the two galaxies, shocks and dense gas were produced, stimulating star formation.
The dusty reddish knot at the lower left of the blue ring probably marks the location of the original nucleus of the galaxy that was hit.
Arp 147 appears in the Arp Atlas of Peculiar Galaxies, compiled by Halton Arp in the 1960s and published in 1966.
This picture was assembled from WFPC2 images taken with three separate filters. The blue, visible-light, and infrared filters are represented by the colors blue, green, and red, respectively.
The galaxy pair was photographed on October 27-28, 2008. Arp 147 lies in the constellation Cetus, and it is more than 400 MLY away from Earth.MareKromium
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PSP_009966_1735_RED_abrowse-00.jpgInverted Channels and Yardangs in Aeolis Mensae (ctx frame - natural colors; credits: Lunexit)60 visiteThis image shows wind-eroded Layered Deposits in Aeolis Mensae. Aeolis Mensae is located close to the Volcanic Region of Elysium Planitia and near the boundary of the high-standing, heavily cratered Southern Hemisphere and the low, sparsely-cratered plains that cover most of the Northern Hemisphere of Mars.
MareKromium
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OPP-SOL458-1.jpgPeaceful Horizon... - Sol 458 (possible True Colors; credits: Dr G. Barca)60 visitenessun commentoMareKromium
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Craters-Unnamed_Crater-Arabia_Terra-PCF-LXTT.jpgDelta Formation in Arabia Terra (Saturated Natural Colors; credits: Dr Paolo C. Fienga - Lunexit Team)60 visitenessun commentoMareKromium
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PSP_010071_2615_RED.jpgGypsum-rich Dunes in Olympia Undae Region (natural colors; credits: Lunexit)60 visiteIn this enhanced-natural color image are dunes within the largest collection of dunes on Mars, Olympia Undae, near the margin of the North Polar Layered Deposits, Planum Boreum.
This section of Olympia Undae is particularly interesting because the dunes are rich in Gypsum (---> Gesso), a mineral that forms in the presence of water. The material comprising these dunes is thought to have eroded from geologic units near the base of the NPLD, but these units have poor to no gypsum content.
Therefore, water likely affected these dunes after the sand had eroded out from the NPLD. Several ideas have been proposed to explain the formation of Gypsum, including hydrothermal (hot water) activity and melting of water-ice in the NPLD.
While gypsum dunes on Earth (for example, at White Sands, New Mexico) are white (the color of Gypsum), these Martian Dunes are dark due to the presence of basaltic grains that lower the brightness of the dunes.
CRISM, another instrument on MRO, has found that the crests of the dunes are the most Gypsum-rich. So, what is the bright, polygonally-fractured material in the low spaces between the dunes?
Perhaps it is Polar Ice lying beneath, desiccated (dried) gypsum material whose fine grain size makes it difficult for CRISM to detect, or something else altogether.MareKromium
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SOL390-2N160995036EFFA300P1820L0M1_v200-00.jpgPseudo-Rocks - Sol 390 (a photo-mosaic by Ivana Tognoloni)60 visiteDalla nostra Cara Amica e "Compagna di Viaggio", Ivana Tognoloni, un nuovo - e sempre affascinante - Campionario di Bizzarrìe Marziane.
Pseudo-rocce, nella fattispecie, dalle forma improbabili e che sfidano la Logica e la Gravità (assecondando - spesso - degli equilibri impossibili o, quanto meno, decisamente complessi...così come fa la roccia a forma di "mezzaluna", sulla Vostra Dx).
Un photo-composite molto bello e curato, per rendersi conto che, su Marte (e, in fondo, in tutto il Cosmo - Terra ovv9iamente inclusa), non bisogna MAI dare nulla per scontato...
Un ringraziamento di Cuore, per l'Amicizia e la Passione dimostrate e quindi i nostri più Sinceri Complimenti ad Ivana per "l'occhio" (una prova ulteriore del fatto che CHI SA DOVE GUARDARE...Finisce SEMPRE con il trovare!).MareKromium
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