... solar system . ... Voyager I cruising on a "magnetic highway" . Scientists believe this is the final region the spacecraft has to cross before reaching interstellar space. ... NASAт??s Voyager 1 spacecraft has encountered a new region on the outskirts of our solar system that appears to be a magnetic highway for charged particles. ... Here, the stream of charged particles from the Sun т?? known as the solar wind т?? abruptly slowed down from supersonic speeds and became turbulent. ...