"For those who didn't know how Voyager can still be working, it is running on a Radioisotope Thermoelectric Generator (a nuclear device). Solar panels would be useless at its current distance from the sun." - JoeCamel

"For example the Voyager missions which started in the late 1970s were made possible by the "Grand Tour" alignment of Jupiter, Saturn, Uranus and Neptune. A similar alignment will not occur again until the middle of the 22nd century." - JoeCamel