NASA's Mars InSight lander reveals what lies at the heart of the Red Planet: With a huge liquid core and relatively thin mantle and crust, NASA's InSight lander has revealed what Mars looks like inside — and it's very different to Earth.

Crazy Engineering: Space Claw on NASA’s InSight Mars Lander

NASA's Mars InSight lander reveals what lies at the heart of the Red Planet: With a huge liquid core and relatively thin mantle and crust, NASA's InSight lander has revealed what Mars looks like inside — and it's very different to Earth.

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