| Piú votate - A Tribute To Mars Global Surveyor |
North_Polar_Features-Layers-MGS-1-PCF-LXTT.jpgNorth Polar Layers (Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team)405 visiteCaption NASA originale:"The middle portion of the Northern Summer Season is the ideal time of year to capture relatively dust- and haze-free views of Martian North Polar Terrain.
This year, much more of the North Polar Cap has sublimed away than has been evident in previous Northern Summers going back to 1999, when MGS began the Mapping Phase of the mission. This MGS-MOC image shows a nearly ice-free view of Layers exposed by erosion in the North Polar Region. The light-toned patches are remnants of water ice frost.
The Layers are generally considered by the Mars scientific community to be record of past depositions of ice and dust. This picture is located near 82,5° North, 118,6° West and covers an area about 3 by 10 Km (approx. 1,9 by 6,2 miles). Sunlight illuminates the scene from the upper left; the image was acquired on September, 22, 2006".MareKromium
(6 voti)
|
|
South_Polar_Regions-PIA03007.jpgDefrosting South Polar Region (Absolute Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team)112 visiteDefrosting Southern Regions
Original caption:"This MGS-MOC image shows a second view of varied Springtime defrosting patterns formed in a dune field and surrounding polygon-patterned ground in the South Polar Region of Mars. (...) The feature sporting an outline of dark spots and an interior of smaller, closely-spaced dark spots and dark-outlined polygons is a patch of windblown or wind-eroded sand that was covered by carbon dioxide frost during the previous Autumn and Winter. The fainter, larger polygon pattern on either side of the patch of defrosting sand is formed in the substrate upon which the sand patch is sitting. Polygonal forms such as these might indicate the presence of ice below the surface".
Location near: 79,9°S; 125,9°W
Image width: width: ~3 Km (~1,9 mi)
Illumination from: upper left
Season: Southern SpringMareKromium
(6 voti)
|
|
Volcanic_Features-Pits-PIA03196.jpgAscraeus Mons (possible Natural Colors; credits: Dr Paolo C. Fienga - Lunexit Team)55 visitenessun commentoMareKromium
(6 voti)
|
|
Craters-Wirtz_Crater-MGS~0.jpgThe Dunes of Wirtz Crater (Natural Colors; credits for the additioonal process. and color.: Dr Paolo C. Fienga - Lunexit Team)54 visitenessun commentoMareKromium
(6 voti)
|
|
Craters-Unnamed_Crater.gifThawing (GIF-Movie; credits for the additional process.: Mars Unearthed)55 visitenessun commentoMareKromium
(6 voti)
|
|
North_Polar_Features-Chasma_Boreale-PIA07195-01-PCF-LXTT.jpgFeatures of Chasma Boreale (Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team) 68 visitenessun commentoMareKromium
(6 voti)
|
|
North_Polar_Regions-Chasma_Boreale-MGS-01.jpgBrown Dunes in Chasma Boreale (Enhanced Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team)54 visitenessun commentoMareKromium
(6 voti)
|
|
North_Polar_Features-Dunes-MGS-09.jpgNorth Polar Dunes (Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team)57 visiteCaption NASA:"What causes the black dots on dunes on Mars? As spring dawned on the Northern Hemisphere of Mars in 2004, dunes of sand near the Poles begin to defrost. Thinner regions of ice typically thaw first revealing sand whose darkness soaks in sunlight and accelerates the thaw.
The process might involve sandy jets exploding through the thinning ice. By Summer, the spots expanded to encompass the entire dunes that were then completely thawed and dark. The carbon dioxide and water ice actually sublime in the thin atmosphere directly to gas. Taken in mid-July, the above image shows a field of spotted polar dunes spanning about 3 Km near the Martian North Pole.
Today, the future of Mars Rovers Spirit and Opportunity remains unknown windy dust storms continue to starve them of needed sunlight".MareKromium
(6 voti)
|
|
South_Polar_Features-01.jpgSouth Polar "River-like" Surface Features? (RAW Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team)66 visitenessun commentoMareKromium
(6 voti)
|
|
Craters-Unnamed_Crater-S16-01-140-03.jpgFresh Crater near Ulysses Patera (Natural Colors; credits: NASA/MGS/MSSS)59 visiteCaption NASA originale:"Ths frame has been colorized using a look-up table derived from the Colors of Mars as seen by the Mars Reconnaissance Orbiter’s High Resolution Imaging Science Experiment (HiRISE) camera".MareKromium
(6 voti)
|
|
Noachis_Terra-M1501427-PCF-LXTT-01.jpgNoachis Panorama (EDM - Enhanced and Saturated Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team)55 visitenessun commento
(6 voti)
|
|
Thaumasia_Region-The_Electric_Dunes-07.jpgThe "Bright Dunes" of Thaumasia (EDM n.2 - Enhanced Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team)66 visiteUn piccolo commentino di chiusura: nessuno sa con esattezza di che cosa si tratti, ma una cosa è certissima (ed è un vero peccato che NESSUNO, MAI, si sia soffermato a valutarla e sottolinearla): si tratta di un'autentica Meraviglia Planetaria.
Un qualcosa che, forse, fra 1000 anni, costituirà mèta per Turisti Spaziali provenienti dalla Terra...e non solo.
(6 voti)
|
|
| 511 immagini su 43 pagina(e) |
 |
|
|
|
|
10 | |
|
|
|
|
