Earth’s spin is not as steady as it looks. As ice melts and groundwater is pumped from deep aquifers to the surface, the ...

Earth’s spin is not as steady as it looks from the ground. As ice sheets melt and aquifers are drained, scientists now say the planet’s axis has shifted by more than 30 inches, a subtle but measurable ...

A typical desk globe is designed to be a geometric sphere and to rotate smoothly when you spin it. Our actual planet is far less perfect — in both shape and in rotation. Earth is not a perfect sphere.

Humans pumped so much groundwater out of the Earth that the planet has begun to wobble detectably on its axis, a new study has found. On its own terms, the magnitude of the new wobble is slight — a ...

The study of polar motion and Earth's rotation dynamics encompasses the investigation of subtle shifts in the orientation of the planet's rotation axis relative to its crust. These motions are ...

Glacial melting due to global warming is likely the cause of a shift in the movement of the poles that occurred in the 1990s. The locations of the North and South poles aren’t static, unchanging spots ...

Earth rotation and polar motion prediction encompass the estimation and forecasting of key parameters that describe the rotational behaviour of our planet. These predictions are pivotal for ...

Earth's shape is an oblate spheroid, slightly bulging at the equator due to its rotation, resulting in a significant difference in distance from the Earth's center between the equator and poles. This ...

Our planet’s magnetosphere has seen dramatic shifts across its history—even total reversals—but this recent wrinkle doesn’t ...

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