# A mineral from the inside of planets reveals a surprising lesson: How you push matters

- Source: Phys.org
- Published: 2026-10-23T07:42:44+00:00
- Category: Science
- Original: https://phys.org/news/2026-10-mineral-planets-reveals-lesson.html
- Canonical: https://groundlevelnews.com/story/a-mineral-from-the-inside-of-planets-reveals-a-surprising-lesson-how-y-7f0d74/

In the deepest region of the Earth's mantle, just above the core, much of the material consists of crystals of magnesium oxide. In larger rocky exoplanets called super-Earths, the higher pressures in the lower mantle may drive magnesium oxide to transform into a new high-pressure crystal structure or a metallic, electrically conductive liquid that generates a magnetic field. And in gas giants, mag

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