grober
MB Master
Well the spacecraft Voyager-1 actually, has officially left the Solar System--- on the 25th of August 2012 a newly published paper claims. In Situ Observations of Interstellar Plasma With Voyager 1 Launched on the 5th September 1977 it is the first man made object to reach interstellar space. BBC News - Voyager probe 'leaves Solar System'