Word: 1980s
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Dates: during 1950-1959
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...early-warning-and-missile defense become available. Among the wild-blue-yonder possibilities: 1) observation of the Communist land mass from space satellites in the 1960s (see SCIENCE); 2) creation of anti-missile radiation belts-"death rays"-that might make sectors of sky impassable to missiles by the 1970s-1980s, much as they have in space fiction for years...