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Saturn-W00052086.jpgUnusual Saturn Image60 visiteSapreste spiegare, in un massimo di tre righe, il contenuto visivo di questo frame?... Provateci, se volete, utilizzando la funzione "commenti"!MareKromium
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L-Original_Lunar_Orbiter_Frames-LO1-1098-01_med.jpgOriginal Lunar Orbiter - Frame LO1-1098 (CTX Frame - The "Full" Area)60 visitenessun commentoMareKromium
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Saturn-PIA11141.jpgThe Lord of the Rings (natural colors; credits: NASA)60 visiteCaption NASA:"As Saturn advances in its orbit toward Equinox and the Sun gradually moves Northward on the Planet, the motion of Saturn's Ring shadows and the changing colors of its atmosphere continue to transform the face of Saturn as seen by Cassini.
This captivating natural color view was created from images collected shortly after Cassini began its extended Equinox Mission in July 2008. It can be contrasted with earlier images from the Spacecraft's four-year Prime Mission that show the shadow of Saturn's Rings first draped high over the Planet's Northern Hemisphere, then shifting Southward as Northern Summer changed to Spring.
During this time, the colors of the Northern Hemisphere have evolved from azure/blue to a multitude of muted-colored bands.
This mosaic combines 30 images — 10 each of red, green and blue light — taken over the course of approximately two hours as Cassini panned its wide-angle camera across the entire Planet and Ring System on July 23, 2008, from a southerly elevation of 6°.
Six moons complete this constructed panorama: Titan, Janus, Mimas, Pandora, Epimetheus and Enceladus.
NASA's Cassini Spacecraft captured these images at a distance of approx. 1,1 MKM (such as about 690.000 miles) from Saturn and at a Sun-Saturn-Spacecraft, or phase, angle of 20°. Image scale is roughly 70 Km (about 43,6 miles) per pixel".MareKromium
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Outpost2.JPGThe Outpost N. 2 (by Roberto Tremolada)60 visitenessun commentoMareKromium
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Outpost1.JPGThe Outpost N. 1 (by Roberto Tremolada)60 visitenessun commentoMareKromium
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North_Polar_Features-The_Erg-PCF-LXTT-6.jpgThe "North Polar Erg" (Absolute Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunar Explorer Italia)60 visiteCaption NASA:"This VIS image shows a small part of the North Polar Sand Sea [or Erg]. In this Region individual dunes are coalescing into large dune groups".
Coord.: 77,0° North Lat. and 309,5° East Long.MareKromium
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OPP-SOL1752-1.jpgDistant Horizon - Sol 1752 (possible True Colors credits: Dr G. Barca)60 visitenessun commentoMareKromium
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APOLLO_15_-_AS_15-86-11645.jpgAS 15-86-11645 - Gnomon and Hole at Station 6 (possible True Colors; credits: Lunar Explorer Italia)60 visitenessun commentoMareKromium
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APOLLO_14_-_AS_14-64-9180.JPGAS 14-64-9180 - EVA-2 - Cross-Sun (possible True Colors; credits: Lunar Explorer Italia)60 visitenessun commentoMareKromium
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PSP_006806_2215_RED_abrowse~0.jpgRelict Glacial Landform in Deuteronilus Mensae (MULTISPECTRUM; credits: Lunexit)60 visiteThis image shows remnant raised margins and other interior structures of a lobate flow feature emanating the mouth of an alcove along a mesa in Deuteronilus Mensae.
This region of Mars has many features called “lobate debris aprons” that spread out below the scarps of polygonal mesas. Many of the debris aprons have what appear to be lineations or grooves that are parallel to their movement direction indicating flow of the materials.
The flow may be due to the presence of ice in the material. Recent data from the Shallow Radar instrument (SHARAD) on the Mars Reconnaissance Orbiter Spacecraft has indicated a large reservoir of subsurface ice in the Deuteronilus Mensae Region that supports the observational evidence of surface flow.MareKromium
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SOL1121-2F225886035EFFAST5P1201R0M1-3.jpgImpossible Balance... - Sol 1121 (credits: Dr G. Barca)60 visiteEquilibrio Impossibile? Giudicate Voi stessi...MareKromium
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Psp_010434_1575_red.jpgFan at Valley Mouth (possible True Colors; credits: Lunar Explorer Italia)60 visiteThis image shows the intersection of a Valley with the floor of a large Impact Crater. The Valley appears to have transported sediment that was deposited on the Crater Floor when the flow slowed. As the Eastern side of the lobate deposit appears to have been sheared off, it is possible that continuing flow from the valley eroded into its own deposits.
The deposit is noticeably different in color from the crater floor, indicating that the Valley transported different sediments. Since the large crater is shallow, likely due to infilling, this suggests that multiple sources of sediment and perhaps multiple deposition processes have affected the geology at this site.
The deposited material in the lobe at the Valley Mouth displays some interesting textural features. Small boulders are commonly present on its surface. This may demonstrate relatively energetic deposition as in a flash flood, although it is possible that the boulders are superimposed debris from later impact craters.
The Southern End of the deposit is also fracturing into blocks or slabs. These could be relics of old mud cracks, or of thermal contraction cracks formed in Permafrost.
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Mars Local Time: 15:42 (middle afternoon)
Coord. (centered): 22,4° South Lat. and 336,3° East Long.
Spacecraft altitude: 259,3 Km (such as about 162,1 miles)
Original image scale range: 25,9 cm/pixel (with 1 x 1 binning) so objects ~78 cm across are resolved
Map projected scale: 25 cm/pixel
Map projection: EQUIRECTANGULAR
Emission Angle: 2,6°
Phase Angle: 68,2°
Solar Incidence Angle: 66° (meaning that the Sun is about 24° above the Local Horizon)
Solar Longitude: 143,2° (Northern Summer)
Credits: NASA/JPL/University of Arizona
Additional process. and coloring: Lunar Explorer ItaliaMareKromium
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