John Belcher

The Voyager spacecraft were launched in the fall of 1977. Forty-three years later, both spacecraft are in the interstellar medium, returning information about the fields and particle environment there. Up through the Uranus encounter in 1986, Herbert Bridge was Principal Investigator on the Plasma Science Experiment on the spacecraft.  John Belcher was then PI during the Neptune encounter in 1989.  In the early 1990s, John Richardson became PI for the Voyager Interstellar Mission.  I discuss various aspects of this mission.