Thirty-five years ago, NASA launched a pair of spacecraft called Voyager 1 and 2 in hopes of learning more about the outer planets of solar system, those big gas giants. The Voyagers beamed back dazzling close-ups of the big red spot on Jupiter and the rings of Saturn, but scientists wanted to see even more of what’s out there, see how far the Voyagers could go before running out of fuel.

source: Voyager 1 Bids Farewell to the Solar System : NPR.

A fantastic achievement for NASA.