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In 2017, a strange, cigar-shaped object entered our solar system from another star system traveling in such an unusual trajectory it caused some astronomers to suggest that it could be an extraterrestrial craft. It brought up an important question--will we have a plan in place for what to do if we encounter alien life?
First Air Date : Apr 20, 2010
Last Air date : Mar 05, 2026
Episode : 285 Episode
Season : 22 Season
Runtime: 42:60 minutes
Studio: History
Country: United States of America
