Mars Reconnaissance Orbiter (MRO)
|
|
|
Volcanoes-Arsia_Mons-PIA13540-1.jpgLayers in the lower West Flank of Arsia Mons (Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team)116 visiteMareKromium
|
|
Volcanoes-Arsia_Mons-PIA13540-2.jpgLayers in the lower West Flank of Arsia Mons (Absolute Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team)118 visiteCaption NASA:"This image - dated July, 18th, 2007) covers a Pit in the lower West Flank of Arsia Mons, one of the four Giant Volcanoes of the Tharsis Volcanic District.
Many Layers are exposed in the Pit, probably marking individual Lava Flows, and they can provide useful information about the nature of some of the many Martian Volcanic Eruptions.
This image was acquired in the middle of a large Regional Dust Storm, but the Atmosphere over this image is only moderately dusty because the altitude is 6,5 Km higher than the Planetary Mean, so the air is quite thin and cannot hold as much Dust. Although the Atmosphere was not too dusty, the Surface is buried by a Dust Layer which is probably several meters thick.
These high-altitude locations on Mars have thick Dust Deposits because the thin air cannot blow away the Dust, or at least not as fast as it accumulates. On Earth the oceans serve as "Dust Traps", but on Mars, it is a job for the highest Volcanoes".MareKromium
|
|
Volcanoes-Olympus_Mons-PIA12992.jpgOlympus' Edge (Extremely Enhanced Absolute Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team)54 visiteThis image covers the Northern Edge of the largest Volcano of the Solar System: Olympus Mons.
The margin of Olympus Mons is defined by a massive Cliff which is several kilometers tall. At this location, the Cliff is nearly 7 Km (about 23.000 feet) tall.
The Cliff exposes the guts of the volcano, revealing interbedded hard and soft layers. The hard layers are Lava and the soft layers may be Dust (from large Dust Storms) or Volcanic Ash.
The High Resolution Imaging Science Experiment (HiRISE) camera on NASA's Mars Reconnaissance Orbiter recorded this image on March 2, 2010.
Most scientists think the the Cliffs formed by Landslides. This collapse is driven by the weight of the huge volcano exceeding the strength of the rocks it is built of.
This image covers a swath of ground about 1 Km (such as approx. two-thirds of a mile) wide. It is a portion of HiRISE observation ESP_016886_2030, which is centered at 22,95° North Lat. and 224,76° East Long. The season on Mars is Northern-Hemisphere Spring.
Other image products from this observation are available at http://hirise.lpl.arizona.edu/ESP_016886_2030.MareKromium
|
|
Weather-PIA10672.gifClear Skies over the Northern Regions (GIF-Movie; credits: NASA)53 visiteScientists are anticipating clear skies when NASA's Phoenix Mars Lander arrives on the north polar plains of the Red Planet Sunday, May 25, 2008.
This orbital view of the north polar region of Mars, where NASA's Phoenix Mars Lander will land, shows clear skies as of May 22, 2008. Mission planners are always on the lookout for dust storms in daily weather updates like this one, provided by the Mars Color Imager on NASA's Mars Reconnaissance Orbiter. Based on current conditions, they are predicting good weather when Phoenix arrives May 25, 2008.
Temperature profiles, used to calculate atmospheric density, are also updated on a regular basis, provided by the Mars Climate Sounder, another instrument on the Mars Reconnaissance Orbiter. Atmospheric density was well within expectations as of May 22, 2008. Mission planners will continue to receive updates on weather and atmospheric conditions prior to landing.
The animated orbital view shows recent weather conditions from May 16 to May 22, 2008, as tracked by the Mars Color Imager on NASA's Mars Reconnaissance Orbiter. A cloud of dust kicked up by Martian winds traveled from west to east between May 19 and May 22, 2008, passing over Phoenix's landing site. The dust cloud was about 500 kilometers (300 miles) from head to tail and made the skies somewhat hazy. Since then, the dust has been replaced by clear skies, indicating that Phoenix will not land in any dust clouds, which are a common occurrence in the northern latitudes of Mars.
MareKromium
|
|
Yardangs-Medusae_Fossae-TRA_000828_1805_IRB-04-PCF-LXTT.jpgYardangs in Medusae Fossae (Absolute Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team)255 visitenessun commentoMareKromium
|
|
|
|
|
| 2237 immagini su 187 pagina(e) |
 |
|
|
|
|
|
|
|
|
187 |
|
