The twin Voyager 1 and 2 spacecraft are exploring where nothing from Earth has flown before. Continuing on their more-than-39-year journey since their 1977 launches, they each are much farther away from Earth and the sun than Pluto. In August 2012, Voyager 1 made the historic entry into interstellar space, the region between stars, filled with material ejected by the death of nearby stars millions of years ago. Scientists hope to learn more about this region when Voyager 2, in the “heliosheath' — the outermost layer of the heliosphere where the solar wind is slowed by the pressure of interstellar medium — also reaches interstellar space. Both spacecraft are still sending scientific information about their surroundings through the Deep Space Network, or DSN. Wii Common Key. The primary mission was the exploration of Jupiter and Saturn.

SAA Voyager is South African Airways’ Loyalty programme. It serves to reward our frequent flyers equitably through the accrual and redemption of Miles. These Miles can be redeemed for flights, upgrades and other rewards.

After making a string of discoveries there — such as active volcanoes on Jupiter's moon Io and intricacies of Saturn's rings — the mission was extended. Voyager 2 went on to explore Uranus and Neptune, and is still the only spacecraft to have visited those outer planets. The adventurers' current mission, the Voyager Interstellar Mission (VIM), will explore the outermost edge of the Sun's domain.

And journeyed to the outer planets on their way to the edge of the Solar System and interstellar space. Their 1977 launch took advantage of a journey-shortening alignment of,,, and that will not happen again for several centuries. Voyager 1 visited Jupiter and Saturn. Voyager 2 visited Jupiter, Saturn, Uranus and Neptune. Both probes took detailed photographs and made other measurements of the gas giants and their. Their many discoveries included erupting volcanoes on Jupiter's moon, 'spokes' in and wind speeds of more than 700mph (1,100km/h) on Neptune.

Photo: Voyager 2 lifts off (NASA/JPL).