Insight
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Politics
A Radioactive Sea of Magma Hides Under the Surface of Mars
The discovery helped to show why the red planet’s core is not as large as earlier estimates had suggested it might be.
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Politics
NASA Concludes InSight, Mars Mission That Listened for Quakes
After four years of making important discoveries about the interior of the red planet, the stationary lander lost power because of Martian dust covering its solar panels.