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Mercury Shrinks 5.6 km, Revealing Geological Secrets

8/20/2025

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Summary

Story summary

Researchers estimate Mercury has contracted by 2.7 to 5.6 kilometers over 4.5 billion years due to cooling.
The study, led by Loveless and Klimczak, employs a new method focusing on major thrust faults for precise measurements.
This shrinkage is vital for modeling Mercury's thermal history and internal heat flow.
The findings improve understanding of Mercury's geological evolution in its harsh environment.

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Story summary

Researchers estimate Mercury has contracted by 2.7 to 5.6 kilometers over 4.5 billion years due to cooling.
The study, led by Loveless and Klimczak, employs a new method focusing on major thrust faults for precise measurements.
This shrinkage is vital for modeling Mercury's thermal history and internal heat flow.
The findings improve understanding of Mercury's geological evolution in its harsh environment.