After 8 years, Europe's BepiColombo mission is on final approach to Mercury

The joint European and Japanese BepiColombo space mission has successfully completed a critical operational milestone on its final approach to Mercury by decoupling its primary propulsion component, the Mercury Transfer Module.

This highly complex maneuver, executed under intense solar radiation and extreme thermal conditions less than half the distance of Earth to the Sun, officially marks the end of the spacecraft's eight-year cruise phase through the inner Solar System. The jettisoned propulsion module had provided electricity and ion-thrust capabilities since the mission's initial launch in late 2018, but its removal was a strict prerequisite to allow the remaining scientific orbiters to safely decelerate and prepare for gravitational capture by the planet later this autumn.

Following the successful mechanical separation, telemetry reports received by ground control indicate that the remaining spacecraft stack is performing optimally, with its primary solar arrays successfully deployed and actively generating power. The two individual scientific probes, one engineered by Europe and the other by Japan, are scheduled to split from one another shortly after entering orbit to begin their independent research tracks. They will deploy specialized suites of scientific instruments to study Mercury's surface composition, magnetic environment, and interactions with intense solar winds. Despite experiencing hardware anomalies and thruster power degradation earlier in the voyage that delayed arrival, the mission remains on course to begin comprehensive scientific observations in early 2025, offering humanity an unprecedented dual-perspective look at the Solar System's innermost planet.