Phys.Org:Voyager 1 spacecraft reaches interstellar space, study confirms
According to this study the detectors on Voyager are receiving information that there has been a rise in electron density to levels that are expected outside the heliopause. This is being interpreted as proof that Voyager has at last left the Solar system. Now they plan to continue looking at the data to see what free space outside the Solar system is like. They expect to get a lot more information from Voyager in the years ahead. Not bad for a spacecraft that started its journey 36 years ago. That is a long time for something to just keep on working.

Bill Gill

C is not the speed of light in a vacuum.
C is the universal speed limit.