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The Mystery of Mercury’s Shrinking Revealed: New Study Estimates 5.6 km Contraction

The Mystery of Mercury’s Shrinking Revealed: New Study Estimates 5.6 km Contraction
science8/18/2025

New research reveals that Mercury's radius has shrunk by 2.7 to 5.6 kilometers since its formation, offering fresh insights into its cooling process and surface faults.

In a groundbreaking study published in AGU Advances, shed new light on the long-standing question of how much Mercury, the smallest planet in our solar system, has shrunk since its formation over 4.5 billion years ago. By employing a novel method for... [4878 chars]