In 1980, the U.S. spacecraft Voyager I sent back the first close-up pictures of the planet Saturn.
CNN: Wednesday,
Voyager-1 was launched on 5 September 1977, and its sister spacecraft, Voyager-2, on 20 August 1977.
BBC: Voyager Solar System 'exit' debated
In contrast, Voyager 1, the most distant spacecraft from earth, will not reach the heliopause until 2019 42 years after its launch.
ECONOMIST: Rockets are not the only way to travel through outer space
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