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Marc Raymans Dawn Mission Update
b'The Dawn Mission Chief Engineer Marc Rayman returns for another report on the ion-engine powered mission, now orbiting 240 miles above dwarf planet Ceres in the Asteroid Belt. Emily Lakdawalla explains the bittersweet quality of Cassini\\u2019s latest images of Saturn\\u2019s moons. Bill Nye talks about two more milestones in commercial space access. Mat and Bruce offer an ISS Above system in the new space trivia contest. Related links are here: http://www.planetary.org/multimedia/planetary-radio/show/2016/0118-astromaterials.html'