NOVAفصل 34 جایگزینی تصویرشماره قسمت12Sputnik DeclassifiedOverviewUsing previously classified documents, NOVA uncovers the secret history of U.S. space programs in the 1950's and how those aspirations were given a boost in 1957 when the Soviet Union launched Sputnik I.Air dateNovember 7, 2007Runtime (min)60
