MAKE A MEME View Large Image NASA 54558main world med1.gif http //www nasa gov/vision/earth/lookingatearth/29dec_magneticfield html a schematic diagram of Earth's interior The outer core is the source of the geomagnetic field PD-USGov Earth Earth cutaways
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Keywords: NASA 54558main world med1.gif http //www nasa gov/vision/earth/lookingatearth/29dec_magneticfield html a schematic diagram of Earth's interior The outer core is the source of the geomagnetic field PD-USGov Earth Earth cutaways
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