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Microscopic Comparison of Airfall Dust to Martian Soil
2008-06-13
  Microscopic Comparison of Airfall Dust to Martian Soil

This pair of images taken by the Optical Microscope on NASA's Phoenix Mars Lander offers a side-by-side comparison of an airfall dust sample collected on a substrate exposed during landing (left) and a soil sample scooped up from the surface of the ground beside the lander. In both cases the sample is collected on a silicone substrate, which provides a sticky surface holding sample particles for observation by the microscope.

Similar fine particles at the resolution limit of the microscope are seen in both samples, indicating that the soil has formed from settling of dust.

The microscope took the image on the left during Phoenix's Sol 9 (June 3, 2008), or the ninth Martian day after landing. It took the image on the right during Sol 17 (June 11, 2008).

The scale bar is 1 millimeter (0.04 inch).

The Phoenix Mission is led by the University of Arizona, Tucson, on behalf of NASA. Project management of the mission is by NASA’s Jet Propulsion Laboratory, Pasadena, Calif. Spacecraft development is by Lockheed Martin Space Systems, Denver.

Image NASA/JPL-Caltech/University of Arizona
   
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Related Links
› NASA Phoenix site

› University of Arizona Phoenix site

› JPL on Facebook and Twitter

› Landing Press Kit (3Mb - PDF)

› Launch Press Kit (6.5Mb - PDF)

› Mission Fact Sheet (244Kb - PDF)

› NASA Mars Exploration site

› NASA/JPL Landing Blog

Other Missions at Mars
› Mars Exploration Rovers

› JPL's Rover News and Image

› Mars Reconnaissance Orbiter

› Mars Odyssey

› Mars Express

 
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