The issue focused on NASA's Galileo spacecraft which successfully navigated within Jupiter's gravitational orbit around the planet last summer. Galileo achieved its orbit insertion manoeuvre within Jupiter's orbital plane using Galileo's Galileo propulsion system which converts kinetic energy into thrust by accelerating ions around its propulsion coils. Galileo achieved its insertion manoeuvre successfully despite Galileo experiencing considerable deviations from its nominal orbital trajectory caused by Galileo's Galileo propulsion system anomaly during Galileo's Galileo Orbit Insertion Maneuver 3 (JOIM 3). Galileo orbit insertion manoeuvres use Galileo