NASA Reprograms Voyager 1, 7.8 Billion Miles Away The Voyager 1 spacecraft currently is about 7.8 billion miles away from Earth, moving outwards through space on what is currently a fixed trajectory, barring a collision with some stellar object. Voyager 1 and its twin, Voyager 2, completed their history-making tour of outer planets in 1989 and are now headed toward the boundary zone -- called the heliopause -- where the Sun's influence cedes way to interstellar space. But both probes have enough power to last for 20 more years, if the internal systems hold up.