German Study Finds Mercury May Have Shrunk Significantly Since Formation

German Study Finds Mercury May Have Shrunk Significantly Since Formation

German Aerospace Center researchers said Mercury is losing about 14 miles of its radius, roughly 30 % faster than earlier estimates. Earlier analysis of MESSENGER data had suggested a possible radius reduction of up to 11. 6 km, and subsequent studies indicated the planet’s diameter could have shrunk by as much as 14.

5 miles since its formation; the BepiColombo mission is slated to investigate the finding. The latest report follows earlier publications that highlighted the larger-than-expected contraction and noted that BepiColombo’s measurements will be used to verify the new estimates.

Acteurs

German Aerospace Center’s Institute of Space Research Gaku Nishiyama BepiColombo mission NASA’s Messenger probe

Lieux

Germany

Articles

14 septembre 2026
1 au total
The Planet Mercury Appears to Have Shrunken Drastically, "Like a Balloon Left Out in the Cold"
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Futurism • 14 sept. 16h28

Researchers from the German Aerospace Center estimate that Mercury could have lost as much as 14.5 miles in diameter, a rate higher than earlier models predicted.

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New analysis suggests Mercury's diameter could have decreased by as much as 14.5 miles since its formation, a larger shrinkage than earlier estimates, and upcoming BepiColombo mission will investigate further.

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Researchers say Mercury's diameter could be decreasing by up to 14 miles, about 30% more than earlier estimates, based on new analysis of surface features.

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Little Mercury may be shrinking faster than scientists expected
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NBC Connecticut • 10 sept. 17h29

Researchers from the German Aerospace Center say Mercury could have lost as much as 14 miles in diameter, a rate about 30% higher than earlier estimates, and the BepiColombo mission will test the findings.

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Yahoo Tech • 10 sept. 13h00

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