Hidden structures deep inside Earth are shaping our planet's protective magnetic shield
Massive, continent-sized blobs of dense rock resting near Earth's core influence the flow of molten iron, directly impacting the strength and stability of the magnetic field that protects our atmosphere.
Two gargantuan structures known as Large Low-Shear-Velocity Provinces sit nearly 1,800 miles beneath Africa and the Pacific Ocean. These dense masses, each larger than the moon, act like thermal blankets that regulate how heat escapes the planet's core.
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