Sciencenature.comGravitational tug-of-war inside Earth is changing the length of our days
Scientists have found that a gravitational and electromagnetic tug-of-war inside Earth's core explains tiny but measurable changes in the length of our days.
A battle of forces, driven by the motion of Earth’s core, can explain small variations in the planet’s rotation, study finds.
A study published in Nature found that competing forces inside Earth's core can explain small variations in how long our planet takes to complete one rotation.
The variations are only a few milliseconds over decades, but researchers at the University of Alberta modelled how mechanical, electromagnetic and gravitational torques combine to cause them.
The finding suggests geophysicists are on the right track to understanding mysterious structures deep inside Earth that have long puzzled scientists.
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