PIA10796: Microscopic Comparison of Airfall Dust to Martian Soil
Target Name: Mars
Is a satellite of: Sol (our sun)
Mission: Phoenix
Spacecraft: Phoenix Mars Lander
Instrument: Optical Microscope
Product Size: 1273 x 1082 pixels (width x height)
Produced By: JPL
Full-Res TIFF: PIA10796.tif (4.137 MB)
Full-Res JPEG: PIA10796.jpg (121 kB)

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Original Caption Released with Image:

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.

Photojournal Note: As planned, the Phoenix lander, which landed May 25, 2008 23:53 UTC, ended communications in November 2008, about six months after landing, when its solar panels ceased operating in the dark Martian winter.

Image Credit:
NASA/JPL-Caltech/University of Arizona

Image Addition Date:
2008-06-13