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ESA's Swarm mission will unravel one of the most mysterious aspects of our planet: the magnetic field.

Although invisible, the magnetic field and electric currents in and around Earth generate complex forces that have immeasurable impact on everyday life.



The Swarm mission is designed to measure the magnetic signals that stem from Earth's core, mantle, crust, oceans, ionosphere and magnetosphere.

This will lead to better understanding of the processes that drive Earth's dynamo, which currently appears to be weakening. By studying the complexities of Earth's protective shield, Swarm will provide a clear insight into processes occurring inside the planet.

Learn more about the objectives of the Swarm mission.



The three identical satellites have a rather unusual shape: trapezoidal with a long boom that is deployed once they are in orbit. Their design is a result of overcoming a number of challenges in accommodating the instrument package, and, since they are launched together on a single rocket, they have to be compact enough to all fit into the launcher fairing.


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Benefiting from the technological excellence Europe and Canada have to offer, the Swarm satellites carry a comprehensive range of new-generation instruments to deliver extremely accurate data to advance our understanding of Earth's magnetic field.