The outspoken planetary scientist who led the Cassini imaging team finally sits down with Mat Kaplan for a revealing, fun conversation. We also talk with astronomer Jay Pasachoff while he watches tiny Mercury crawl across the face of the Sun. Chief scientist Bruce Betts was in the Planetary Society parking lot enjoying the November 11th transit of Mercury. He joins us from there for What’s Up. Learn more about this week’s guest and topics at: https://www.planetary.org/multimedia/planetary-radio/show/2019/1113-2019-carolyn-porco.html

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