NASA marks landmark Voyager launch

NASA is celebrating a major milestone for space exploration. The Voyager 1 spacecraft was launched 40 years ago. The probe and its cousin Voyager 2 are still going strong, and are the farthest-travelled and longest-serving spacecraft in history.

    NASA is celebrating a major milestone for space exploration. The Voyager 1 spacecraft was launched 40 years ago. The probe and its cousin, Voyager 2, are still going strong, and are the farthest-travelled and longest-serving spacecraft in history.

    Al Jazeera's Duncan Crawford reports.


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