Mercury is shrinking more than we thought

Mercury's surface is riddled with wrinkles, evidence of a once-larger planet that has shrunk over time. A new study finds that Mercury may have contracted 10% to 30% more than previously thought—a loss of nearly 12 miles (19 kilometers) of total diameter since the planet formed—due to debris from impact craters obscuring signs of the planet's shrinking.

Read it at Phys.org ↗

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