AI Insight
On September 3, 2026, the BepiColombo spacecraft successfully separated its Mercury Transfer Module (MTM) from the main spacecraft stack, marking the beginning of its arrival sequence at Mercury. The European Space Agency (ESA) Mission Control Team at ESOC received confirmation of the separation at 15:49 CEST. This represents a critical milestone for the joint ESA-JAXA mission after its multi-year journey to the innermost planet of our solar system.
Why it matters
This separation is the first crucial step in BepiColombo's insertion into Mercury's orbit, which will enable detailed scientific study of the planet's composition, magnetic field, and geological history. The mission will provide unprecedented data about Mercury's formation and evolution, helping scientists better understand the development of rocky planets in our solar system.
Understand the Science

On 3 September 2026 at 15:49 CEST, the European Space Agency’s BepiColombo Mission Control Team at the European Space Operations Centre (ESOC) received the signal they had been waiting for – BepiColombo’s Mercury Transfer Module (MTM) successfully separated from the spacecraft stack. This landmark achievement for the ESA and Japan Aerospace Exploration Agency (JAXA) mission marks the first step of BepiColombo’s long-awaited arrival at Mercury.
Source: BepiColombo begins Mercury arrival with MTM separation success