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Moon had magnetic field at least a billion years longer than thought – study | The moon | The Guardian
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Moon's magnetic field disappeared a BILLION years ago after its 'internal dynamo' stopped | Daily Mail Online
How does the Moon create the magnetic field of Earth and what effect do moons have on other planets like Mars or Venus? - Quora
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Earth's magnetic field has helped put water on the, study finds 'unexpected' process | Science | News | Express.co.uk
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