Mars Has a Surprise Layer of Molten Rock Inside
Fresh investigations find that the Red Planet’s liquid-metal core is smaller than scientists thought
![Mars Has a Surprise Layer of Molten Rock Inside](https://static.scientificamerican.com/sciam/cache/file/DF1E3946-0D85-4D53-B01FA5EB06102DF4_source.jpg?#)
Fresh investigations find that the Red Planet’s liquid-metal core is smaller than scientists thought
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