Returning the first samples from a Martian moon: Inside the science of Japan's bold MMX mission to Mars

space.com Oct 18, 2026

Returning the first samples from a Martian moon: Inside the science of Japan’s bold MMX mission to Mars

Curated by Shubham · TechCapsules · Oct 18, 2026

AI-summarised brief · reviewed before publication

Japan’s Martian Moons eXploration (MMX) mission will launch on an H3 rocket from Tanegashima on Oct. 19, aiming to become the first spacecraft to return samples from Mars orbit. After a ten‑month cruise, MMX will enter Mars orbit in August 2027, spend three years studying Phobos, deploy the IDEFIX rover, and collect surface material that could be the inaugural samples from the Mars system. The probe will then conduct flybys of Deimos before departing for Earth in November 2030, with a sample‑return capsule slated to land in Australia in 2031. MMX’s three modules—propulsion, exploration (housing instruments such as MEGANE, MIRS, TENGOO, OROCHI, LIDAR and a mass spectrometer) and return—are built by Mitsubishi Electric, with key scientific hardware contributed by NASA, CNES and DLR.

💡 Why It Matters

· The mission will deliver pristine Martian‑moon material to Earth, offering a unique window into the early solar system and the origin of Phobos and Deimos.

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