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List		 Addition DateSort Ascending Target Mission Instrument Size
Add Image to Favorite List 2003-12-08 Mars 2001 Mars Odyssey
 Gamma Ray Spectrometer Suite
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This map from NASA's 2001 Mars Odyssey released on Dec 8, 2003 shows the percent of water by weight in near-surface materials of Mars' north polar region. Significant concentrations of water (greater than 20 percent) are poleward of 55 deg north latitude.
PIA04908:
North Polar Water Ice by Weight
Full Resolution:     TIFF (5.945 MB)     JPEG (318.1 kB)
Add Image to Favorite List 2003-12-08 Mars 2001 Mars Odyssey
 Gamma Ray Spectrometer Suite
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This map from NASA's 2001 Mars Odyssey released on Dec 8, 2003 shows the estimated lower limit of the water content of the upper meter of Martian soil. Highest water-mass fractions, exceeding 30 percent to well over 60 percent, are in the polar region.
PIA04907:
Water Mass Map from Neutron Spectrometer
Full Resolution:     TIFF (1.486 MB)     JPEG (165.4 kB)
Add Image to Favorite List 2003-06-30 Mars 2001 Mars Odyssey
 Gamma Ray Spectrometer Suite
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Observations by NASA's 2001 Mars Odyssey spacecraft show a comparison of wintertime (left) and summertime (right) views of the north polar region of Mars in intermediate-energy, or epithermal, neutrons.
PIA04596:
Seasonal Frost Changes on Mars
Full Resolution:     TIFF (4.931 MB)     JPEG (239.6 kB)
Add Image to Favorite List 2003-06-30 Mars 2001 Mars Odyssey
 Gamma Ray Spectrometer Suite
 2560x1918x3
Observations by NASA's 2001 Mars Odyssey spacecraft show a summertime view of the north polar region of Mars in intermediate-energy, or epithermal, neutrons.
PIA04595:
Winter in Mars' North Polar Region
Full Resolution:     TIFF (9.608 MB)     JPEG (381.1 kB)
Add Image to Favorite List 2003-06-30 Mars 2001 Mars Odyssey
 Gamma Ray Spectrometer Suite
 2560x1918x3
Observations by NASA's 2001 Mars Odyssey spacecraft show a summertime view of the north polar region of Mars in intermediate-energy, or epithermal, neutrons.
PIA04593:
Summer in Mars' North Polar Region
Full Resolution:     TIFF (10.15 MB)     JPEG (337.8 kB)
Add Image to Favorite List 2003-03-13 Mars 2001 Mars Odyssey
 Gamma Ray Spectrometer Suite
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Thorium is a naturally radioactive element that exists in rocks and soils in extremely small amounts. The region of highest thorium content, shown in red on this gamma ray spectrometer map from NASA's Mars Odyssey, is in northern Acidalia Planitia.
PIA04257:
Map of Martian Thorium at Mid-Latitudes
Full Resolution:     TIFF (2.505 MB)     JPEG (174.9 kB)
Add Image to Favorite List 2003-03-13 Mars 2001 Mars Odyssey
 Gamma Ray Spectrometer Suite
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NASA's Mars Odyssey produced this gamma ray spectrometer map of the mid-latitude region of Mars is based on gamma-rays from the element silicon, one of the most abundant elements on the surface of both Mars and Earth.
PIA04256:
Map of Martian Silicon at Mid-Latitudes
Full Resolution:     TIFF (2.631 MB)     JPEG (173.6 kB)
Add Image to Favorite List 2003-03-13 Mars 2001 Mars Odyssey
 Gamma Ray Spectrometer Suite
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The element potassium, shown on this NASA Mars Odyssey gamma ray spectrometer map of the mid-latitude region of Mars, is a naturally radioactive element and is a minor constituent of rocks on the surface of both Mars and Earth.
PIA04255:
Map of Martian Potassium at Mid-Latitudes
Full Resolution:     TIFF (2.463 MB)     JPEG (179.9 kB)
Add Image to Favorite List 2003-03-13 Mars 2001 Mars Odyssey
 Gamma Ray Spectrometer Suite
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NASA's Mars Odyssey spacecraft produced this gamma ray spectrometer map, which is centered on the north pole of Mars and based on gamma-rays from the element hydrogen. In this region, hydrogen is mainly in the form of water ice.
PIA04254:
Map of Martian Polar Hydrogen
Full Resolution:     TIFF (2.15 MB)     JPEG (117 kB)
Add Image to Favorite List 2003-03-13 Mars 2001 Mars Odyssey
 Gamma Ray Spectrometer Suite
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This gamma ray spectrometer map from NASA's Mars Odyssey of the mid-latitude region of Mars is based on gamma-rays from the element iron, one of the most abundant elements on Mars and Earth. It is responsible for the red color on the surface of Mars.
PIA04253:
Map of Martian Iron at Mid-Latitudes
Full Resolution:     TIFF (2.495 MB)     JPEG (180.7 kB)
Add Image to Favorite List 2002-12-10 Mars 2001 Mars Odyssey
 Gamma Ray Spectrometer Suite
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These two views of Mars were made with data taken by the neutron spectrometer component of NASA's Mars Odyssey spacecraft and show epithermal neutron flux, which is sensitive to the amount of hydrogen present.
PIA03744:
Odyssey/NS
Full Resolution:     TIFF (890.3 kB)     JPEG (93.61 kB)
Add Image to Favorite List 2002-05-30 Mars 2001 Mars Odyssey
 Gamma Ray Spectrometer Suite
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This global view of Mars in intermediate-energy, or epithermal, neutrons was created from observations by NASA's Mars Odyssey spacecraft.
PIA03808:
HEND Maps of Epithermal Neutrons
Full Resolution:     TIFF (576 kB)     JPEG (719.5 kB)
Add Image to Favorite List 2002-05-30 Mars 2001 Mars Odyssey
 Gamma Ray Spectrometer Suite
 1785x2532x3
Observations by NASA's Mars Odyssey spacecraft show a global view of Mars in high-energy, or fast, neutrons.
PIA03807:
HEND Maps of Fast Neutrons
Full Resolution:     TIFF (600.3 kB)     JPEG (770.9 kB)
Add Image to Favorite List 2002-05-28 Mars 2001 Mars Odyssey
 Gamma Ray Spectrometer Suite
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This artist's rendering portrays ice-rich layers in the soils of Mars being detected by instruments aboard NASA's 2001 Mars Odyssey spacecraft.
PIA03804:
Artist's View of Odyssey Detecting Ice (Artist Concept)
Full Resolution:     TIFF (72.28 MB)     JPEG (3.86 MB)
Add Image to Favorite List 2002-05-28 Mars 2001 Mars Odyssey
 Gamma Ray Spectrometer Suite
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This diagram shows a possible configuration of ice-rich and dry soil in the upper meter (3 feet) of Mars. The ice-rich soil was detected by the gamma ray spectrometer suite of instruments aboard NASA's Mars Odyssey spacecraft.
PIA03803:
Cross-Section of Icy Soil
Full Resolution:     TIFF (2.723 MB)     JPEG (421.9 kB)
Add Image to Favorite List 2002-05-28 Mars 2001 Mars Odyssey
 Gamma Ray Spectrometer Suite
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Observations by NASA's Mars Odyssey spacecraft show views of the polar regions of Mars in thermal neutrons (top) and epithermal neutrons (bottom). In these maps, deep blue indicates a low amount of neutrons and red indicates a high amount.
PIA03802:
Polar Maps of Thermal and Epithermal Neutrons
Full Resolution:     TIFF (633.3 kB)     JPEG (586 kB)
Add Image to Favorite List 2002-05-28 Mars 2001 Mars Odyssey
 Gamma Ray Spectrometer Suite
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Observations by NASA's Mars Odyssey spacecraft show a global view of Mars in low energy, or thermal, neutrons. Thermal neutrons are sensitive to the presence of hydrogen and the presence of carbon dioxide, in this case 'dry ice' frost.
PIA03801:
Global Map of Thermal Neutrons
Full Resolution:     TIFF (1.161 MB)     JPEG (1.242 MB)
Add Image to Favorite List 2002-05-28 Mars 2001 Mars Odyssey
 Gamma Ray Spectrometer Suite
 2668x1371x3
NASA Mars Odyssey observations are used in this global view of Mars in intermediate-energy, or epithermal, neutrons. Soil enriched by hydrogen is indicated by the deep blue colors on the map, which show a low intensity of epithermal neutrons.
PIA03800:
Global Map of Epithermal Neutrons
Full Resolution:     TIFF (1.268 MB)     JPEG (1.292 MB)
Add Image to Favorite List 2002-03-06 Mars 2001 Mars Odyssey
 Gamma Ray Spectrometer Suite
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A high content of hydrogen in Mars' southern polar region is apparent in this global map of high-energy neutrons measured by NASA's Mars Odyssey spacecraft.
PIA03489:
Global Map, High-Energy Neutrons
Full Resolution:     TIFF (88.48 kB)     JPEG (141.2 kB)
Add Image to Favorite List 2002-03-01 Mars 2001 Mars Odyssey
 Gamma Ray Spectrometer Suite
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NASA's Mars Odyssey spacecraft produced this high-energy neutron detector map of neutrons in Mars' southern hemisphere. The blue region around the south pole indicates a high content of hydrogen in the upper 2 to 3 meters (7 to 10 feet) of the surface.
PIA03488:
Southern Hemisphere Neutron Map
Full Resolution:     TIFF (90.83 kB)     JPEG (131.3 kB)
Add Image to Favorite List 2002-03-01 Mars 2001 Mars Odyssey
 Gamma Ray Spectrometer Suite
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The deep blue colors on this map of the south pole of Mars from NASA's Mars Odyssey spacecraft show where a low intensity of epithermal neutrons is found.
PIA03487:
South Pole Neutron View
Full Resolution:     TIFF (581.8 kB)     JPEG (80.74 kB)
Add Image to Favorite List 2002-03-01 Mars 2001 Mars Odyssey
 Gamma Ray Spectrometer Suite
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In this image taken by NASA's Mars Odyssey spacecraft during its first week of mapping, soil enriched in hydrogen is indicated by the deep blue colors, which show a low intensity of epithermal neutrons.
PIA03486:
Global Neutron View
Full Resolution:     TIFF (579.3 kB)     JPEG (80.85 kB)
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