A powered rasp on the back of the robotic arm scoop of NASA's Phoenix Mars Lander is being tested for the first time on Mars in gathering sample shavings of ice.
The lander has used its arm in recent days to clear away loose soil from a subsurface layer of hard-frozen material and create a large enough area to use the motorized rasp in a trench informally named "Snow White."
The Phoenix team prepared commands early Tuesday for beginning a series of tests with the rasp later in the day. Engineers and scientists designed the tests to lead up to, in coming days, delivering a sample of icy soil into one of the lander's laboratory ovens[redorbit]
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