| Ultimi arrivi - THE LUNAR EXPLORER ARCHIVES |
ORIGINAL NASA APOLLO 12 - AS12-47-7010.jpgAS 12-47-7010 - What is that? (2)80 visiteFeb 26, 2005
|
|
ORIGINAL NASA APOLLO 12 - AS12-47-7009.jpgAS 12-47-7009 - What is this? (1)61 visiteFeb 26, 2005
|
|
Volcanoes-Arsia_Mons-E05-1721_1722_arsia100.jpgArsia Mons Volcano and "spiral clouds" (Natural Colors; credits: NASA/JPL/MSSS)90 visiteCaption NASA originale:"One of the benefits of the MGS-MOC Extended Mission is the opportunity to observe how the planet's weather changes during a second full martian year. This picture of Arsia Mons was taken on June 19, 2001; Southern Spring equinox occurred the same day. Arsia Mons is a volcano nearly large enough to cover the state of New Mexico. On this particular day (the first day of Spring), the MOC wide angle cameras documented an unusual spiral-shaped cloud within the 110 Km diameter caldera - such as the summit crater - of the giant volcano. Because the cloud is bright both in the red and blue images acquired by the wide angle cameras, it probably consisted mostly of fine dust grains. The cloud's spin may have been induced by winds off the inner slopes of the volcano's caldera walls resulting from the temperature differences between the walls and the caldera floor, or by a vortex as winds blew up and over the caldera. Similar spiral clouds were seen inside the caldera for several days; we don't know if this was a single cloud that persisted throughout that time or one that regenerated each afternoon".Feb 21, 2005
|
|
Craters-Unnamed_Crater_with_Dark_Streaks-2003_08.jpgDark Slope Streaks on the edge of an Unnamed Crater (Saturated Natural Colors; credits: NASA/MGS/MSSS)90 visiteCaption NASA originale:"This June 2003 MGS-MOC image shows a crater rim mantled with fine dust near 7.6°N, 171.8°W. Occasional avalanches of dust have created dark streaks that are tapered at their source and broaden downslope.
A suite of particularly large streaks are seen in the lower right quarter of the picture. The MOC narrow angle camera does not take color images; this full-resolution (1,5 m/pixel; 5 ft/pixel) picture has been "colorized" using data from a previous color image of Mars.
Sunlight illuminates this scene from the lower left".Feb 21, 2005
|
|
Aeolian_Features-DD_and_Dust_Storms-2003_06_02-00.jpgDust Storms and Dust Devils between Syria Planum and Claritas Fossae (Enhanced Natural Colors; credits: NASA/MGS/MSSS)91 visiteCaption NASA originale:"This color-enhanced composite of Mars Global Surveyor (MGS) Mars Orbiter Camera (MOC) wide angle images shows dust-raising events (small dust "storms" and a few very large dust devils) in the Syria/Claritas Region around 2 p.m. MLT on May 21, 2003. The Region is southwest of the Labyrinthus Noctis, near 14°S, 108°W. Sunlight illuminates the scene from the left; winds were blowing from the west/southwest when the picture was taken. This composite was constructed from a full-resolution (240 meters per pixel) red wide angle image and a much lower resolution (7,5 Km per pixel) blue wide angle image acquired at the same time".Feb 21, 2005
|
|
Craters-Galle_Crater-Happy_Face_Crater-2003_05_15_M2300366.jpgGalle Crater (Natural Colors; credits: NASA/MGS/MSSS)83 visiteCaption NASA originale:"The 2 pictures shown here are taken from the same daily global image mosaic (the only difference is that each was processed slightly differently). The pictures show Galle Crater, informally known as "Happy Face," as it appeared in early Southern Winter. The white-ish gray surfaces are coated with wintertime carbon dioxide frost. The pattern of frost distribution gives the appearance that "Happy Face" has opened its mouth. Galle Crater is located on the east rim of Argyre Planitia at 51°S, 31°W. Sunlight illuminates the scene from the upper left. Galle Crater is about 230 Km (143 mi) across".Feb 21, 2005
|
|
North_Polar_Features-Polygons-PIA07354-0.jpgNorth Polar "Polygons" (Original NASA/MGS/MSSS b/w Frame)68 visiteCaption NASA originale:"This Mars Global Surveyor (MGS) Mars Orbiter Camera (MOC) image shows Polygons formed in ice-rich material in the North Polar Regions of Mars. The bright surfaces in this image are covered by a thin Water Ice Frost".Feb 15, 2005
|
|
Craters-Unnamed_Craters_with_Sedimentary_Rock_Outcrops-PIA07127-00.jpgSedimentary Rocks (Original NASA/MGS/MSSS b/w Frame)69 visiteCaption NASA originale:"Burial and Exhumation of Impact Craters, and their destruction by erosion, are common and repeated themes all over the Surface of Mars. Many Craters in Western Arabia Terra exhibit light-toned, Layered Outcrops of ancient Sedimentary Rock. Like the Sedimentary Rocks explored further to the South in Meridiani Planum by the Opportunity Mars Exploration Rover (MER-B), these "Intracrater Sedimentary Rocks" may have been deposited in water. This MGS-MOC image shows an example of light-toned Sedimentary Rocks outcropping in an Unnamed Crater that is much farther North than most of the similar examples in Western Arabia Terra. This one is located near 36,6° North Lat. and 1,4° West Long. and shows several old Impact Craters in various states of erosion and exhumation from beneath and within the Sedimentary Rock Materials. The image covers an area of approx. 3 Km".Feb 12, 2005
|
|
Channels-Unnamed_Channel_in_Stygis_Catena-PIA07133-00.jpgAncient Riverbed in Stygis Catena (Original NASA/MGS/MSSS b/w Frame)58 visiteCaption NASA originale:"This MGS-MOC image shows a Trough (trough---> canale) in the Stygis Catena Region, East of the Martian Volcano Elysium Mons. The Trough probably formed by collapse (collapse--->geol. "cedimento" del terreno). Large, dark Boulders can be seen on the Trough Floor in this Volcanic Region. The image is located near 24,4° North Lat. and 210,4° West Long. The image covers an area about 3 km (approx. 1,9 mi) wide and sunlight illuminates the scene from the lower left".Feb 12, 2005
|
|
Craters-Tikhonravov_Crater-PIA07196.jpgThe "Eyes" and "Eyebrows" of Tikhonravov Crater (Original NASA/MGS/MSSS b/w Frame)74 visiteCaption NASA originale:"This red wide angle MGS-MOC image shows Tikhonravov Crater in Central Arabia Terra. The Crater is about 386 Km (approx. 240 miles) in diameter and presents two Unnamed Impact Craters at its center that have dark patches of Sand in them, giving the impression of pupils in two eyes. Each of these two Unnamed Craters lies a dark-toned patch of Surface Material, providing the impression of eyebrows.
M. K. Tikhonravov was a leading Russian rocket engineer in the 20th Century. The crater named for him, despite its large size, is still partly buried, on its West Side, beneath the heavily Cratered Terrain of Arabia Terra. The center of Tikhonravov is near 13,5° North Lat. and 324,2° West Long. Sunlight illuminates the scene from the upper left".Feb 12, 2005
|
|
Dunes-Dark_Dunes-Noachis_Terra-PIA07351-00.jpgDark Dunes in Noachis Terra (Original NASA/JPL/MSSS b/w Frame)90 visiteCaption NASA originale:"This MGS-MOC image shows low albedo Sand Dunes on the floor of a crater in Southern Noachis Terra".
Location near: 52.5° South Lat. and 336.9° West Long.
Image width: ~~3.0 Km (~1.9 mi)
Illumination from: upper left
Season: Southern AutumnFeb 12, 2005
|
|
Dunes-Dark_Dunes-Chasma_Boreale-PIA07350-00.jpgDark Dunes in Chasma Boreale (Original NASA/JPL/MSSS b/w Frame)103 visiteCaption NASA originale:" This MGS-MOC image shows Dark Sand Dunes overlying an eroded, layered substrate in Chasma Boreale, amid the materials of the Martian North Polar Cap.
Location near: 84,5° North Lat. and 358,3° West Long.
Image width: ~3,0 Km (~1,9 mi)
Illumination from: lower left
Season: Northern Summer".Feb 12, 2005
|
|
| 3212 immagini su 268 pagina(e) |
 |
|
|
|
|
259 | |
|
|
|
|
