| Piú viste - Mars from Orbit (from July 2009) |
Dunes-PaleoDunes-1.jpgPaleodunes (1 - Original NASA/MGS/MSSS b/w Frame)54 visiteCaption NASA:"A pair of MGS-MOC images shows close-up views of a Sand Dunefield that was first detected by the Viking Orbiters in the late 1970's. What is surprising about the MOC images is that they reveal a dune field unlike any other thus far seen on Mars: this one has Impact Craters on its Surface, and LOTS of them! The field of parallel Ridges North of the Dunefield is a wind-eroded material named "Apollinaris Sulci". It is possible that the Dunefield shown here was once covered by this wind-eroded material and was later exhumed. Regardless, the Dunes were somehow hardened and have been exposed as hard rock on the Martian Surface long enough for many Impact Craters smaller than a few hundred meters (such as few hundred yards) across to form. These Dunes are therefore quite ancient: one might say that this is a 'fossilized' Dunefield".
|
|
Dunes-PaleoDunes-2.JPGPaleodunes (2 - Original NASA/MGS/MSSS b/w Frame)54 visiteCaption NASA:"A similar effect at a much smaller scale can be seen by examining some Sandstones and Siltstones on Earth (if conditions were right, ripples formed in either water or wind are preserved in such rocks). The first MOC view, labeled M03-00006, was taken on July 1, 1999. The second view, M07-05007, was acquired September 26, 1999. Both MOC images are illuminated from the left. The Dunefield is located East of the Apollinaris Patera volcano and North-East of Gusev Crater (at about 12,5° South Lat. and 181° West Long.)".
|
|
Dunes-PaleoDunes-3.JPGPaleodunes (3 - Original NASA/Viking 2 Project b/w Frame)54 visitenessun commento
|
|
Hills-Knob-Elysium_Planitia-PIA08079-00.jpgBizarre "Knob" in Elysium Planitia (Original NASA/JPL/ASU b/w Frame)54 visiteImage information: VIS instrument;
Latitude: 1,1° South;
Longitude: 156,0° East;
Resolution: 18 meter/pixel.
|
|
Craters-Unnamed_Crater_in_Arabia_Terra-PIA08473-00.jpgUnnamed Crater in Arabia Terra (Original NASA/JPL/ASU b/w Frame)54 visiteImage information: VIS instrument;
Latitude: 12,1° North;
Longitude: 3,7° East;
Resolution: 18 meter/pixel.
|
|
Craters-Unnamed_Double_Crater-00.jpgUnnamed "Double" Impact Crater (1 - Original NASA/JPL/ASU b/w Frame)54 visiteLocation near: 42,9° North Lat. and 157,9° East Long.
Image width: ~3 Km (~1,9 mi)
Season: Northern Spring
Resolution: 19 mt/pixel
|
|
North_Polar_Features-North_Polar_Margin-PIA08705-1.jpgThe North Polar "Margin" (1 - Original NASA/JPL/ASU b/w Frame)54 visiteImage information: VIS instrument;
Latitude: 81,1° North;
Longitude: 299,2° East:
Resolution: 20 meter/pixel.
|
|
Craters-Unnamed_Crater-Vastitas_Borealis-PIA08475-00.jpgUnnamed Crater with frosted Rim... (False Colors; credits: NASA/JPL-ASU)54 visitenessun commentoMareKromium
|
|
Craters-Kaiser_Crater-Dunefield-PCF-LXTT.jpgDark Dunefield inside Kaiser Crater (Extremely Saturated Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team)54 visitenessun commento
|
|
Craters-Unnamed_Crater_with_possible_Oil_Lake-V07738009-PCF-LXTT-02.jpgMigrating Dunes, Dirty Waters or maybe Surfacing Hydrocarbons? (3 - Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team)54 visitenessun commentoMareKromium
|
|
Craters-Unnamed_Crater_with_possible_Oil_Lake-V07738009-PCF-LXTT-05.JPGAs Time Goes By... (an Image-Mosaic by Dr Gianluigi Barca - Lunexit Team)54 visiteQuadro comparativo delle possibili variazioni di forma e texture del materiale individuato sul fondo di un cratere senza nome posto ad una elevata Latitudine Sud.MareKromium
|
|
Craters-Unnamed_Crater_with_possible_Oil_Lake-V07738009-PCF-LXTT-04.jpgMigrating Dunes, Dirty Waters or maybe Surfacing Hydrocarbons? (5 - Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team)54 visitenessun commentoMareKromium
|
|
| 1003 immagini su 84 pagina(e) |
 |
|
|
|
|
|
|
|
82 | |
|
