In the last months Voyager 1 has experienced a dramatic drop in the cosmic ray radiation, which was been exceptionally uniform for the last 10 years, except for the past july 28 and august 14 events, when the radiation suddenly had big drops. After each of those events, the radiation temporarily went back to normal, until we reach september, when the radiation seems to drop for good to the real galactic background
Astrophysicists think this suggests a ribbon-like structure distribution. Is it conceivable that there is a first order phase transition in the magneto-plasma medium, in which we are seeing the Voyager crossing in and out of the interface boundary? What else could keep the two separate regions of different order so well-differentiated from each other?