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This graph shows the atmospheric pressure at the surface of Mars, as measured by the Rover Environmental Monitoring Station on NASA's Curiosity rover.
Pressure Cycles on Mars
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This diagram illustrates Mars' "thermal tides," a weather phenomenon responsible for large, daily variations in pressure at the Martian surface.
Thermal Tides at Mars
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NASA's Mars rover Curiosity used a mechanism on its robotic arm to dig up five scoopfuls of material from a patch of dusty sand called "Rocknest," producing the five bite-mark pits visible in this image from the rover's left Navigation Camera (Navcam).
Five Bites Into Mars
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This subframe image from the left Mast Camera (Mastcam) on NASA's Mars rover Curiosity shows the covers in place over two sample inlet funnels of the rover's Sample Analysis at Mars (SAM) instrument suite.
Inlet Covers for Sample Analysis at Mars
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NASA's Mars Exploration Rover Opportunity inspected this mineral vein, called "Homestake," in November 2011 at the northern end of the "Cape York" section of Endeavour Crater's western rim.
'Homestake' Vein on 'Cape York,' Color Enhanced
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A rind that appears bluish in this false-color view covers portions of the surface of a rock called "Whitewater Lake" in the top half of the view from NASA's Mars Exploration Rover Opportunity.
'Whitewater Lake' Rock Viewed by Opportunity
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This self-portrait of NASA's Mars Exploration Rover Spirit is a polar projection of the 360-degree "McMurdo" panorama made from images taken by Spirit's panoramic camera (Pancam).
Spirit Mars Rover in 'McMurdo' Panorama, Polar Projection (False Color)
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This self-portrait of NASA's Mars Exploration Rover Spirit is a polar projection of the 360-degree "McMurdo" panorama made from images taken by Spirit's panoramic camera (Pancam).
Spirit Mars Rover in 'McMurdo' Panorama, Polar Projection
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This 360-degree scene, called the "McMurdo" panorama, comes from the panoramic camera (Pancam) on NASA's Mars Exploration Rover Spirit.
Spirit Mars Rover in 'McMurdo' Panorama (False Color)
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This 360-degree view, called the "McMurdo" panorama, comes from the panoramic camera (Pancam) on NASA's Mars Exploration Rover Spirit.
Spirit Mars Rover in 'McMurdo' Panorama
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This picture shows a lab demonstration of the measurement chamber inside the Tunable Laser Spectrometer, an instrument that is part of the Sample Analysis at Mars investigation on NASA's Curiosity rover.
Shooting Lasers
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This illustration shows the locations and interactions of volatiles on Mars. Volatiles are molecules that readily evaporate, converting to their gaseous form, such as water and carbon dioxide.
Volatiles on Mars
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This graph shows the percentage abundance of five gases in the atmosphere of Mars, as measured by the Quadrupole Mass Spectrometer instrument of the Sample Analysis at Mars instrument suite on NASA's Mars rover in October 2012.
The Five Most Abundant Gases in the Martian Atmosphere
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If the atmosphere of Mars contains methane, various possibilities have been proposed for where the methane could come from and how it could disappear.
Potential Sources and Sinks of Methane on Mars
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The plot on the left shows new results from the Sample Analysis at Mars, or SAM, instrument on NASA's Curiosity rover.
Weighing Molecules on Mars
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On Sol 84 (Oct. 31, 2012), NASA's Curiosity rover used the Mars Hand Lens Imager (MAHLI) to capture this set of 55 high-resolution images, which were stitched together to create this full-color self-portrait.
High-Resolution Self-Portrait by Curiosity Rover Arm Camera
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Self-portrait of NASA's Curiosity Mars rover uses thumbnail versions of MAHLI component images to give an idea of what a sharper version will look like when the full-frame images are assembled.
Preliminary Self-Portrait of Curiosity by Rover's Arm Camera
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The Martian soil examined by the Chemistry and Mineralogy (CheMin) instrument on NASA's Curiosity rover shows the diffraction signature, or "fingerprint," of the mineral olivine, shown here on Earth in the form of tumbled crystals about a quarter-inch (several millimeters) in size.
Olivine on Earth
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This graphic shows results of the first analysis of Martian soil by the Chemistry and Mineralogy (CheMin) experiment on NASA's Curiosity rover.
First X-ray View of Martian Soil
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This pair of images from the Mast Camera on NASA's Curiosity rover shows the upper portion of a wind-blown deposit dubbed "Rocknest."
Wind-Blown Martian Sand
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This pair of images shows a "bite mark" where NASA's Curiosity rover scooped up some Martian soil (left), and the scoop carrying soil.
Curiosity Digs In
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This pair of images shows a "bite mark" where NASA's Curiosity rover scooped up some Martian soil (left), and the scoop carrying soil.
Curiosity Digs In (Annotated)
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This image shows the cells that hold the soil samples that are vibrated by the Chemistry and Mineralogy (CheMin) instrument on NASA's Curiosity rover.
Shake it up, CheMin
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This charged couple device (CCD) is part of the Chemistry and Mineralogy (CheMin) instrument on NASA's Curiosity rover.
Detector for CheMin
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A conventional X-ray diffraction instrument (left) is the size of a large refrigerator, in contrast to the compact size of the Chemistry and Mineralogy (CheMin) instrument on NASA's Curiosity rover (top right) and the spin-off commercial portable instrument (lower right, orange case).
X-ray Diffraction, Big and Small
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