SPACE — Voyagers were launched 42 years ago, but Voyager 2 took the longer route to interstellar space.<br /><br />Live Science reports that Voyager 2 detected a fiery plasma wall in the heliopause, where the sun's outward blowing solar winds clash with cosmic rays. This barrier protects the solar system by repulsing and weakening cosmic rays.<br /><br />Citing NASA, Live Science reports that Voyager 1 could not detect the wall because its sensors malfunctioned. However, as Voyager 2 crosses the heliopause, it found holes in the protective shell and temperatures twice as high as past models predicted.<br /><br />According to BBC, the sun's energies charge particles into an ionized plasma state and shoot them out to form solar winds and the heliopause.
