Mars lander loses day of work after data glitch

This image released by NASA and acquired by NASA's Phoenix Mars Lander shows a new trench called "Snow White," in a patch of Martian soil near the center of a polygonal surface feature nicknamed "Chesire Cat." Excavation near Mars' north pole was halted Wednesday as engineers fixed a glitch on the Phoenix lander that caused the partial loss of science data. (AP Photo/NASA/JPL/CalTech)