A controversy about the Voyager 1 spacecraft has had the space community captivated this year. Has Voyager 1 left the solar system or not?
In March of this year NASA issued a report saying that reports about Voyager 1 having left our solar system are not valid. Edward Stone, Voyager project scientist based at the California Institute of Technology, Pasadena, Calif said back then: "It is the consensus of the Voyager science team that Voyager 1 has not yet left the solar system or reached interstellar space. In December 2012, the Voyager science team reported that Voyager 1 is within a new region called 'the magnetic highway' where energetic particles changed dramatically. A change in the direction of the magnetic field is the last critical indicator of reaching interstellar space and that change of direction has not yet been observed."
Now a new report from scientists claims again that Voyager 1 already left the solar system last year according to Space.com. As the Voyager cannot phone home the dispute will go on for a while.
You can read up on the Voyager mission on the NASA site.