GoKawiilNew Analysis Shows Mercury Has Shrunk Far More Than Prior Estimates
Researchers recalculated how much Mercury's radius has contracted over its history and found the planet has shrunk 10% to 30% more than earlier studies indicated. The updated figures come from reassessing surface features like fault scarps that record the planet's cooling and contraction over billions of years.
GoKawiil's interpretation of the reporting above, not reported fact.
Mercury's shrinkage is a key clue to its internal cooling history, core size, and geologic evolution, so significantly revising the estimate changes scientists' models of the planet's structure and thermal past. It also affects comparisons with other rocky planets, including Earth, in understanding how planetary interiors evolve over time.
- Mercury has contracted 10-30% more than previously calculated
- New estimates rely on reanalyzing surface fault scarps and tectonic features
- Findings could reshape models of planetary cooling and core evolution
Celestron NexStar 130SLT Telescope — Mercury is notoriously tricky to spot low on the horizon, and a computerized GoTo mount like the NexStar 130SLT makes finding it far easier. Its reflector optics gather plenty of light for planetary viewing, so you can chase the little shrinking world yourself after reading about its contraction.
See Celestron NexStar 130SLT Telescope on Amazon → Affiliate link — we may earn a commission on purchases, at no extra cost to you. Product picked by AI based on this article; it is not a tested recommendation.Source: gizmodo.com, 2026-09-10
Published there as: “Scientists Drastically Underestimated How Much Mercury Has Shrunk”
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