Mars News

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This week Mars is the closest it has been in 60,000 years. We'll talk with a planetary geologist about the past climate on Mars and what the planet's close proximity means for scientists.

Guest:

Philip Christensen
* Korrick Professor of Geological Sciences
* Principle Investigator, Mars THEMIS (Thermal Emissions Imaging System) and Mars TES (Thermal Emission Spectrometer), Arizona State University, Tempe, Arizona

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