Trench on Mars Ready for Next Sampling by NASA Lander

(PhysOrg.com) -- NASA's Phoenix Mars Lander has groomed the bottom of a shallow trench to prepare for collecting a sample to be analyzed from a hard subsurface layer where the soil may contain frozen water.

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<p><a href="http://www.physorg.com/news136132810.html">Trench on Mars Ready for Next Sampling by NASA Lander</a></p> <p>(PhysOrg.com) -- NASA's Phoenix Mars Lander has groomed the bottom of a shallow trench to prepare for collecting a sample to be analyzed from a hard subsurface layer where the soil may contain frozen water. </p>