The Voyager 1 spacecraft has gone farther than any manmade object. It is reaching the edge of the solar system and will soon pass into interstellar space.
As Voyagers 1 and 2 continue their epic journeys through interstellar space, they're resolving past controversies and even helping to spark a new one: the true shape of the heliosphere. Launched more than four decades ago, the two Voyager spacecraft keep expanding our horizons. Having flown...