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The linked article is about Voyager 1, NASA's iconic space probe, unexpectedly contacting Earth using a backup transmitter that hasn't been used since 1981. The article explains that this unexpected communication has surprised scientists, who are now investigating the cause and potential implications of this event. It highlights the resilience and longevity of the Voyager 1 spacecraft, which continues to provide valuable data from the edge of our solar system, despite being launched over 40 years ago.