Watch a Tidal Magnetic Field Sweep Across Earth

The tides are often discussed, but to see them in action and how they impact Earth isn’t so easy to depict--until now.

The European Space Agency (ESA) published a new video this week that depicts the tides as they change around the world. But more importantly, it shows the magnetic field they create, which for the first time, has been mapped by the agency.

Every drop counts: the magnetic field generated by ocean tides is tiny and extremely difficult to measure.. but @esa #SwarmMission...


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