NASA's Phoenix Lander Might Peek Under a Rock

If the robotic arm on NASA's Phoenix Mars Lander can nudge a rock aside, scientists on the Phoenix team would like to see what's underneath. Engineers who develop commands for the robotic arm have prepared a plan to try displacing a rock on the north side of the lander. This rock, roughly the size and shape of a VHS videotape, is informally named "Headless."

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