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Celebrity Alien Encounters

17 of 19

Walter Cronkite

Late news anchor Walter Cronkite, "the most trusted man in America," was reportedly fascinated with life outside of Earth. Cronkite quizzed several top scientists on the issue during his long career, including this chat with Carl Sagan in 1966. —XFINITY Entertainment Staff

(Photo: Mark Mainz/Getty)

The opinions expressed are solely those of the author and do not necessarily reflect the views of Comcast.

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