Photos: Mars lander discovers white material

Here's a closer look at the white material in the trench now called "Dodo-Goldilocks" that was uncovered by the robotic arm aboard the Phoenix. The white material was first noticed on June 3 but more has been exposed as the robotic arm has dug deeper. Since the white material is only on one end of the trench, NASA scientists theorize that they could have hit the edge of a slab of ice.

Photo by NASA/JPL-Caltech/University of Arizona/Texas A&M University

Caption by Andy Smith