Earth's Center of Mass Drifts Less Than We Thought

Earth's center of mass has been found to drift less than previously thought, with the new study using GPS data and low-orbit satellites to improve accuracy to less than a millimeter. The results show that seasonal shifts in the center of mass are about half of earlier estimates, indicating that the two hemispheres of Earth are less interconnected than previously believed. This finding challenges the assumption that the center of mass is fixed and highlights the dynamic nature of Earth's mass distribution.

• The study accounts for changes in water and air movement between hemispheres, revealing that the shift in Earth's center of mass is smaller than expected.
• The results also include longer-term shifts due to geological processes such as volcanic activity and earthquakes, which affect Earth's rotational speed.
• These precise measurements have implications for understanding geological changes and improving the accuracy of location-based technologies like satellite constellations.

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