Earth’s Center Is Moving: NASA Reveals a Hidden Seasonal Wobble

NASA researchers have developed a more precise way to track tiny seasonal shifts in Earth’s center of mass. Ocean tides, rainfall, snowfall, and atmospheric changes subtly move the planet’s mass, causing the geocenter to wobble.

By combining GPS and laser measurements, scientists found these movements are about half as large as previously estimated. The improved measurements could strengthen global navigation, satellite mapping, and our ability to monitor environmental changes.

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