Voyager 1 made its closest approach to Jupiter on March 5, 1979, capturing detailed images of the planet's atmosphere, rings, and moons while discovering volcanic activity on Io and passing within 349,000 kilometers of the gas giant.

During its flyby of Io on March 5, 1979, Voyager 1 discovered active volcanoes on the moon's surface, making it the first time volcanic activity had been observed beyond Earth.

Voyager 1 conducted a flyby of Europa on March 5, 1979, capturing detailed images of the moon's icy surface and revealing a complex network of cracks and ridges that suggested the presence of a subsurface ocean.

During its flyby of Ganymede on March 5, 1979, Voyager 1 captured detailed images of the moon's surface from a distance of 114,700 kilometers, revealing a complex terrain of ancient dark regions and younger, grooved areas marked by tectonic activity.

During its flyby of Callisto on March 6, 1979, Voyager 1 captured detailed images of the moon's heavily cratered surface from a distance of 124,000 kilometers, revealing it to be the most heavily cratered object in the Solar System.

Voyager 1 completed its Saturn flyby on November 12, 1980, capturing unprecedented images of the planet's rings and atmosphere while discovering several new moons and revealing the first detailed views of Titan's dense atmosphere.

Voyager 1 made the first close flyby of Titan on November 12, 1980, revealing the moon's dense atmosphere and capturing detailed images of its orange haze while passing within 4,000 kilometers of its surface.

During its flyby of Tethys on November 12, 1980, Voyager 1 captured detailed images of the moon's surface from a distance of 415,000 kilometers, revealing its large impact crater Odysseus and extensive system of valleys.

Voyager 1 captured the first detailed images of Mimas during its flyby on November 12, 1980, revealing the moon's most distinctive feature: the massive Herschel impact crater that gives it a Death Star-like appearance.

Voyager 1 performed a distant flyby of Enceladus at a range of 202,000 kilometers on November 12, 1980, providing the first detailed images of this icy Saturnian moon.

Voyager 1 made its closest approach to Rhea on November 12, 1980, capturing detailed images of the heavily cratered moon from a distance of 73,980 kilometers during its Saturn system flyby.

Voyager 1 captured detailed images of Saturn's irregularly-shaped moon Hyperion during a flyby on September 1, 1981, revealing its unusual "sponge-like" appearance and chaotic rotation.