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Swarm satellites help scientists understand Earth's magnetic field

from Sensors & Systems

Earth's magnetic field is like a huge cocoon, protecting the planet from cosmic radiation and charged particles found in solar wind. European Space Agency Swarm satellites are recording details about one of the most difficult to observe layers of Earth's magnetic field — as well as the magnetic history imprinted on Earth's crust. Most of Earth's magnetic field is generated by the movement of molten iron in the outer core at depths greater than 3,000 kilometers. more


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