closeup images of mars soil in robotic arm scoop

This image shows a microscopic view of fine-grained material at the tip of the Robotic Arm scoop as seen by the Robotic Arm Camera (RAC) aboard NASA’s Phoenix Mars Lander on June 20, 2008, the 26th Martian day, or sol, of the mission.

RAC scientists took this image at a resolution of 30 microns [...]