Inge Lehmann, Discovered the Earth's Inner Core
    check out other biographies of Women in Physics at UCLA's website
        http://www.physics.ucla.edu/~cwp/Phase2/Lehmann,_Inge@81234567.html

Research on the Earth's Interior, UC Berkeley
     look under "Global Studies" for technical information on the Earth's interior
        http://www.seismo.berkeley.edu/seismo/research/research.html

Is the Earth's Inner Core a Single Crystal?
    Ron Cohen of the "Gee Whiz" Lab in Washington DC explains this question
        http://www.psc.edu/science/Cohen_Stix/cohen_stix.html

Earth as a Planet, University of Arizona (other planets here too)
        http://seds.lpl.arizona.edu/nineplanets/nineplanets/earth.html

Mars Global Surveyor Images, from USGS
       http://ida.wr.usgs.gov
 

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