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Alien ‘lava lamp’ with dying magnetic field orbited Earth a billion years ago – science

Ancient Moon rocks vital clue in space dynamo study

Scientists studying prehistoric lunar rocks have found evidence of a lava-lamp-like dynamo at the heart of our Moon’s metallic core that generated a long-lasting magnetic field.…


http://go.theregister.com/feed/www.theregister.co.uk/2017/08/11/ancient_moon_rocks_magnetic_field_dynamo/