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25· Cooling
Health & Science1h 54m ago
Earth's inner core grows by approximately one millimeter per year as molten iron crystallizes onto its surface, releasing energy that drives convection in the outer core and generates the planet's magnetic field.
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Earth
Who
N/A
What
Earth's inner core grows by approximately one millimeter per year as molten iron crystallizes onto its surface, releasing energy that drives convection in the outer core and generates the planet's magnetic field.
When
Wed, 15 Jul 2026 07:10:41 GMT · 1h 54m ago
Where
Earth ·
Why
The slow crystallization of molten iron onto the inner core releases latent heat and buoyant fluids, which drive convection in the outer core.
The Frontline Impact
How this affects you
The ongoing growth of Earth's inner core is essential for maintaining the planet's magnetic field, which protects the atmosphere from solar wind.
Story chain
1 event in this threadNo related history yet - this is the origin event.