Astronomers.
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Copernicus pencentenary.
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Life on other planets : is there any, and how could we talk with it if there is? / Bobby Nelson and Dan McKinna ; interviewed by Anita Frankel.
Two astronomers talk about the search for extra-terrestrial life.|LIFE ON OTHER PLANETS : IS THERE ANY, AND HOW COULD WE TALK WITH IT IF THERE IS? / Bobby Nelson and Dan McKinna| interviewed by Anita Frankel. – SERIES: The Wizard show Two astronomer, Bobby Nelson and Dan McKinna, talk about the search for extra-terrestrial life,…