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RT @PEPS_JpGU: New! George Helffrich Feasibility of a magma ocean dynamo on Mars https://t.co/WneN6YcPmT #mars https://t.co/i4EXL8UfuR
RT @PEPS_JpGU: New! George Helffrich Feasibility of a magma ocean dynamo on Mars https://t.co/WneN6YcPmT #mars https://t.co/i4EXL8UfuR
New! George Helffrich Feasibility of a magma ocean dynamo on Mars https://t.co/WneN6YcPmT #mars https://t.co/i4EXL8UfuR