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Bill Nye & Neil DeGrasse Tyson on a Roof

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“Dear Citizen of Planet Earth,”

That's how Carl Sagan addressed the public in an introductory letter about the Planetary Society back in the 1980s.

Now Bill (CEO) and Neil (Board Member) reminisce about those days, talk about what we should call people from planet Earth, discuss how Neil's Cosmos TV show stressed Bill out, and tell us who the first humans to orbit Mars will be.