Voyager 2 preceded it into space by 16 days, but Voyager 1 quickly overtook it on a faster trajectory, and arrived at Jupiter 4 months before its sister craft. Voyager 1 took this photo of Jupiter ...

But the moon’s wild volcanic activity wasn’t detected until Voyager 1 flew by Jupiter and its moons in 1979, revealing Io’s ...

Even if Voyager 1 had gone dark for good, however, the mission would still have been a wild success. After it launched in 1977, its primary mission was to study Jupiter and Saturn — that was ...

Voyager 1 observed Jupiter, Saturn, and Saturn’s moon Titan before becoming the first human-made object to reach interstellar space. Voyager 2 gave scientists second looks at Jupiter and Saturn ...