.Each Voyager probings include three sets, or even branches, of thrusters: 2 sets of mindset propulsion thrusters and one set of trail adjustment procedure thrusters. During the course of the mission's wandering flybys, each sorts of thrusters were utilized for different functions. But as Voyager 1 travels on an unvarying pathway out of the solar system, its own thruster necessities are less complex, and either thruster branch can be used to aim the space capsule at Earth.