Mars Up Close, Part 3: Ken Edgett

Malin Space Science Systems geologist Ken Edgett uses Curiosity, the Mars rover, to study the layers of rock on Mars, divulging secrets of the red planet's past and learning more about our own planet, Earth.

The National Geographic Live series brings thought-provoking presentations by today’s leading explorers, scientists, photographers, and performing artists right to you. Each presentation is filmed in front of a live audience at National Geographic headquarters in Washington, D.C. New clips air every Monday.

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