Voyager 1 is very, very near the edge of the solar system that gives way to interstellar space.
NASA has reported that 2 of 3 indicators show the 11 billion-mile away spacecraft is near the edge of the Sun's influence called the heliosphere. But until the magnetic field shifts to indicate the interstellar magnetic field vice the Sun's, Voyager 1 is still in the solar system.
Scientists with the Voyager 1 and 2 missions are watching very closely the readings sent back by the hardy and ancient (by spacecraft standards!) explorers as they continue thier mission.
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