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Scientists Just ‘Looked’ Inside Mars. Here’s What They Found


Illustration: Nicolas Sarter/IPGP

While humans have been struggling to control the Covid-19 pandemic, baking in record heat, and trying to figure out how not to run out of water, our spacecraft on Mars have been enjoying a rather more tranquil existence. (Not needing to breathe helps.) Parked on the Martian surface, the InSight lander is listening for marsquakes, while the Perseverance rover is rolling around in search of life.

This week, scientists are dropping an Olympus Mons of findings from the two brave robots. In three papers published today in the journal Science—each authored by dozens of scientists from around the world—researchers detail the clever ways they used InSight’s seismometer to peer deep into the Red Planet, giving them an unprecedented understanding of its crust, mantle, and core. It’s the first time scientists have mapped the interior of a planet other than Earth. And yesterday ...


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