Why we need to go back to Mars?

Joel Levine: Why we need to go back to Mars?

At TEDxNASA, planetary scientist Joel Levine shows some intriguing and puzzling new discoveries about Mars: craters full of ice, traces of ancient oceans, and compelling hints at the presence, sometime in the past, of life. He makes the case for going back to Mars to find out more.

Joel Levine studies the atmospheres of Earth and Mars, looking at their origin, evolution, structure and chemistry and climate change. He's the principal investigator of the proposed ARES Mars Airplane Mission.



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