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         APXS: Alpha Particle X-Ray Spectrometer for the Mars Science
        Laboratory 
        Principal Investigator: Ralf Gellert,
        Max-Planck-Institute for Chemistry, Mainz, Germany 
          
        The 2009 MSL APXS will have advanced
        capabilities, beyond those of the APXS instrument currently on
        each of the two Mars Exploration Rovers. The APXS will be provided
        by the Canadian Space Agency. 
          
         
        
          
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            MSL's APXS is located on the arm turret
            with many other instruments and tools. | 
           
         
          
          
        Ralf
        Gellert page, Dept. of Physics,
        Univ. of Guelph, Canada, lead scientist for MSL APXS  |