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NASA Confirms Mars Has Solid Inner Core, Reshaping Planet's History

9/21/2025

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Summary

Story summary

Recent studies show Mars has a solid inner core, contradicting earlier beliefs of a fully liquid core.
NASA's InSight mission data reveals a solid inner core with a diameter of 613 km, surrounded by a liquid outer core of 1,800 km.
This core structure is similar to Earth's, indicating Mars may have once had a protective magnetic field.
The loss of this magnetic field likely led to Mars's current desolate condition.
Further research is necessary to understand the core's composition and its historical implications.

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Story summary

Recent studies show Mars has a solid inner core, contradicting earlier beliefs of a fully liquid core.
NASA's InSight mission data reveals a solid inner core with a diameter of 613 km, surrounded by a liquid outer core of 1,800 km.
This core structure is similar to Earth's, indicating Mars may have once had a protective magnetic field.
The loss of this magnetic field likely led to Mars's current desolate condition.
Further research is necessary to understand the core's composition and its historical implications.