On September 28, 2026, a European spacecraft bound for Jupiter skimmed past our own planet — close enough to photograph it in stunning detail, fast enough to steal a tremendous burst of speed. ESA’s Jupiter Icy Moons Explorer, Juice, flew just 8,640 kilometers above the Indian Ocean, snapped a series of haunting images of home, and let Earth’s gravity slingshot it onward. It was the mission’s third gravity assist — and one of its most spectacular. A close shave over the Indian Ocean Closest approach came at 11:45 UTC on September 28. At 8,640 kilometers above the waves — less than 70 percent of Earth’s own diameter, a stone’s throw in orbital terms — Juice threaded the needle with what its operations team called ultra-precise real-time navigation. Spacecraft operations manager Angela Dietz noted the flyby used only a small fraction of its reserved propellant, thanks to meticulous planning. For comparison, the International Space Station orbits about 400 kilometers up. Juice passed more than twenty times farther out — but on an interplanetary trajectory, at interplanetary speed, aiming for a moving target five years away. Precision like that is the difference between reaching Jupiter and missing it entirely. Stealing speed from Earth The flyby wasn’t sightseeing — it was propulsion. Earth’s gravity grabbed Juice, bent its trajectory by 20 degrees, and flung it onward 3.5 kilometers per second faster — roughly 7,800 miles per hour of free velocity. No fuel burn can cheaply buy that kind of kick; gravity assists are how deep-space missions afford the outer solar system. Every meter per second matters here. Juice is a heavy spacecraft with a long way to go, and propellant saved now is maneuvering room banked for Jupiter — where the real work, including entering orbit around the moon Ganymede, will demand plenty. The long road to Jupiter This was the third of four planned gravity assists. Juice launched in April 2023 from Europe’s spaceport in French Guiana. In August 2024 it pulled off the first-ever lunar-Earth double flyby — a braking maneuver. In August 2025 it stole speed from Venus. Now Earth again, and one final Earth flyby in January 2029, before the long cruise out. Arrival is set for July 2031. Then the mission proper begins: a tour of Jupiter’s great icy moons — Europa, Ganymede, and Callisto — worlds believed to hide liquid-water oceans beneath their frozen crusts. The finale is a first in spaceflight history: Juice will enter orbit around Ganymede, the largest moon in the solar system. The cameras that caught it The images came from an unlikely source: Juice’s monitoring cameras, JMC1 and JMC2. These are 1024×1024-pixel engineering cameras whose real job is watching the spacecraft’s booms…
Juice’s Earth flyby in stunning images | September 2026
Source: European Space Agency, ESA
