NASA spacecraft gains 3.5 km/s speed from Earth’s gravity assist without major engine burn

On September 28, 2026, Juice, the Jupiter Icy Moons Explorer, accomplished a successful gravity assist flyby of Earth. This maneuver was pivotal in adjusting the spacecraft's trajectory and significantly boosting its speed without the need for extensive engine thrust. Throughout its mission, Juice has strategically employed gravity assists, effectively conserving fuel.