Mission · Mars
Martian Moons eXploration (MMX)
Orbiter, lander and sample return, with the IDEFIX rover (CNES/DLR)
- Status
- Cruise
- Launched
- 19 Oct 2026
- Target
- Mars and its moon Phobos (with flybys of Deimos)
- Agencies
- JAXA, CNES, DLR, NASA, ESA
- Next
- 2027 arrival at Mars, about a year after launch
Summary
A Japanese mission to orbit Phobos, land, collect samples and bring them back to Earth. If it succeeds, these will be the first samples from the Mars system. It carries the French–German IDEFIX rover and instruments from NASA and ESA.
Now as of 3 Nov 2026
Launched on 19 October 2026 at 19:41 UTC (20 October, 04:41 Japan time) on an H3-24L rocket (flight F10) from Tanegashima (Space.com, nippon.com). The spacecraft is on its way to Mars. It is the only interplanetary launch of the 2026 Mars window.
Key dates
- 19 Oct 2026Launch (H3-24L F10, Tanegashima)done
- 2027Arrival at Mars, transfer to an orbit near Phobosplanned
- ≈ 2029Rover landing and sample collection (date to be set)planned
- 2031Sample capsule returns to Earthplanned