NASA's Phoenix Mars Lander Delivers Soil Sample To Microscope

MARSDAILY

The Robotic Arm on NASA's Phoenix Mars Lander has just delivered the first sample of dug-up soil to the spacecraft's microscope station in this image taken by the Surface Stereo Imager during the mission's Sol 17 (June 12), or 17th Martian day after landing. The scoop is positioned above the box containing key parts of Phoenix's Microscopy, Electrochemistry and Conductivity Analyzer, or MECA, instrument suite. It has sprinkled a small amount of soil into a notch in the MECA box where the microscope's sample wheel is exposed. The wheel turns to present sample particles on various substrates to the Optical Microscope for viewing. Image NASA/JPL-Caltech/University of Arizona/Texas A and M

by Staff Writers
Tucson AZ (SPX) Jun 13, 2008
NASA's Phoenix Mars Lander sprinkled a spoonful of Martian soil Wednesday onto the sample wheel of the spacecraft's robotic microscope station, images received early Thursday confirmed.

"It looks like a light dusting and that's just what we wanted. The Robotic Arm team did a great job," said Michael Hecht of NASA's Jet Propulsion Laboratory, Pasadena, Calif. He is the lead scientist for the Microscopy, Electrochemistry and Conductivity Analyzer (MECA) instrument on Phoenix.

The delivery of scooped-up soil for inspection by the lander's Optical Microscope, a component of MECA, marks the second success in consecutive days for getting samples delivered to laboratory instruments on Phoenix's deck. Some soil from an earlier scoopful reached a tiny oven in another instrument on Tuesday, as confirmed in data received early Wednesday.

That instrument is the Thermal and Evolved-Gas Analyzer, or TEGA. Commands being sent to Phoenix today include instructions to close TEGA oven number 4 and begin analyzing the sample inside, a process that will take several days.

The soil now in the microscope station came from the same scoopful that was used for a practice run of the sprinkle delivery technique on Monday. That scoopful has the informal name "Mama Bear." The sample delivered to TEGA oven 4 has the informal name "Baby Bear."

Both came from a trench now called "Goldilocks" but earlier referred to as Baby Bear, on the northwest side of the lander.

The Phoenix team assembled at the University of Arizona plans to command the Robotic Arm in the next day or two to dig deeper into the Goldilocks trench and an adjacent trench called "Dodo" to determine the depth to an underlying layer of hard material that may be ice.

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MARSDAILY

After whole lotta shakin', Mars probe ready to bake

Washington (AFP) June 11, 2008
Scientists were all smiles Wednesday after samples of Martian arctic soil finally dropped into the Phoenix lander's oven instrument, putting the search for signs of past life on Mars back on track.

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