Voyager 1 Crossed Over?

For a few years now, scientists have been eagerly awaiting the time Voyager 1 passed out of the Sun's primary influence, crossing into interstellar space.  Recent data suggests that milestone may have already been reached.

In late August, the data shows, Voyager was being hit more often by high-energy particles and less often by low-energy ones.  Scientists interpret the high energy strikes to be cosmic rays from deep space and the low energy hits to be the Sun's solar wind.  Therefore, there's a good chance Voyager may already be out of the Solar System.

If the next reading of the magnetic field yonder shows a shift consistent with the magnetic field of interstellar space, that would likely clinch the deal.