This image, taken on Oct. 7, 2008, shows soil delivery to NASA's Phoenix Mars Lander's Microscopy, Electrochemistry and Conductivity Analyzer (MECA). At the bottom of the image is the chute for delivering samples to MECA's microscopes; the cumulative effect of several sample deliveries can be seen in the soil piles on either side of the chute. On the right side are the four chemistry cells with soil residue piled up on exposed surfaces. Credit: NASA/JPL-Caltech/University of Arizona/Texas A&M University
