Artist's concept of the interior of Mars shows a hot liquid core that is about one-half the radius of the planet.

September 26, 2013

Artist's concept of the interior of Mars shows a hot liquid core that is about one-half the radius of the planet. The core is mostly made of iron with some possible lighter elements such as sulfur. The mantle is the darker material between the core and the thin crust.

Credit

NASA/JPL-Caltech

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