JPL prepares to explore Mars' core

Deputy Principal Investigator for the InSight mission, Suzanne Smrekr, at the Jet Propulsion Laboratory. The mission will send a lander to explore Mars' core in 2016. "We're going for the interior and we're going not just to learn about Mars, but to learn about how bodies form and evolve overall," she says.
Tim Berger / Staff Photographer
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