SAM and Curiosity are set to fly on the on the upcoming Mars Science Laboratory (MSL) rover mission scheduled for launch in the fall of 2011.

SAM will become an automated, mobile laboratory as it is carried across Mars by the rover when the mission arrives at the Red Planet in 2012. Together with other instruments on Curiosity, SAM will assess whether Mars ever was, or is still today, an environment able to support microbial life.

"We expect Curiosity will make amazing discoveries," said SAM Principal Investigator Dr. Paul Mahaffy of NASA Goddard, "and we are looking forward to the contributions our mobile chemistry laboratory can make to a better understanding of the history of our neighboring planet."

SAM is in flight configuration, meaning its instruments are in the condition they will be during launch and are ready to begin operations on Mars.

The instrument suite (a mass spectrometer, gas chromatograph, and tunable laser spectrometer) has started final environmental testing this week, which includes vibration and thermal testing to ensure SAM can survive the launch, deep space flight, and conditions on Mars.

Once at Mars, SAM will examine the planet's habitability by exploring molecular and elemental chemistry relevant to life. SAM will analyze samples of Martian rock and soil to assess carbon chemistry through a search for organic compounds.

The lab will also determine the chemical state of light elements other than carbon, and look for isotopic tracers of planetary change.

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Curiosity Mars Lab at JPL
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