Science

Earth's center of mass drifts less than we thought

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Based on a feed excerpt; full article content has not been acquired. Source evidence retrieved 21/09/2026, 19:55:11 UTC.

Briefings

A recent study suggests Earth's center of mass has drifted less than previously estimated, challenging assumptions about internal density variations. Published in Geophysical Journal International on September 21, 2026, the research indicates the planet's center of mass has remained relatively stable over recent decades, contrary to earlier models suggesting significant movement. The study utilized satellite laser ranging and gravity data to refine the Earth's mass distribution model, revealing that the center of mass is more concentrated than anticipated. This finding implies that the Earth's core and mantle are more uniform than previously thought, with minimal internal mass redistribution affecting the planet's overall center of mass position.

Key points

• Earth's center of mass has drifted less than previously estimated, challenging earlier models suggesting significant movement.
• The study utilized satellite laser ranging and gravity data to refine the Earth's mass distribution model.

Context and limitations

Data coverage is limited to the period between 2010 and 2026, with snapshot accuracy varying by location and measurement technique. Uncertainty exists regarding long-term stability beyond the study period, and assumptions about mantle density uniformity remain unverified.

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