The double doors to the oven that will heat up the ice sample (on the right) are wide open in this image of four pairs of oven doors on Phoenix's Thermal and Evolved-Gas Analyzer (TEGA). The lander's Surface Stereo Imager took this photo on July 19, 2008, during the 53rd Martian day, or sol, since Phoenix landed. Credit: NASA/JPL-Caltech/University of Arizona/Texas A&M University
