NASA releases tracker to help show when Voyager leaves the solar system

NASA scientists and the space-loving public are eagerly awaiting the moment when the unmanned Voyager 1 spacecraft becomes the first vessel in human history to exit the solar system, which is expected some time in the next few years at the latest. But with a number of false positives of that milestone in recent months, NASA is taking a step to make sure when Voyager clears the boundary of the solar system, people will know for sure.