This link is cool. It talks about Voyager 1 reaching a zone within our Sun’s influence which had not been previously predicted. This is predicted that this is one of the last layers before the satellite escapes the influence of our Sun’s gravity. It should leave our bubble soon and reach deep space for the first time ever.
We should know the exact moment it reaches interstellar space, mainly because the Sun’s gravity not only pulls inward and keeps our planets in a consistent orbit, but acts as a bubble/shield from cosmic rays. This means when Voyager leaves the icy depths of our solar system, the temperatures will sharply rise. It will no longer have the Sun tugging at it’s back, but will encounter extreme cosmic/solar rays that whip violently directly outside our system’s front door.