# Japan's MMX Mission Returns First Martian Moon Samples

> Japan's MMX spacecraft aims to return the first samples from Mars' moon Phobos to Earth by 2031.
- Title: Japan's MMX Mission Returns First Martian Moon Samples · Space
- Summary: Japan's MMX spacecraft aims to return the first samples from Mars' moon Phobos to Earth by 2031. Japan's MMX mission will return the first samples from Mars'…
- Keywords: japan, mmx, phobos, mars, sample return, space exploration, japan aerospace exploration agency, mars moon, spacecraft, scientific mission, science, Japan's
- Source: Space — https://space.com/space-exploration/missions/returning-samples-from-a-mars-moon-inside-the-science-of-japans-bold-mmx-mission
- Published: 2026-10-18T19:20:03+00:00
- Read time: 2 min
- Topics: japan, mmx, phobos, mars, sample return, space exploration, japan aerospace exploration agency, mars moon, spacecraft, scientific mission, science
## The mission
Japan's MMX mission aims to become the first spacecraft to return samples from Mars to Earth.
## Launch and timeline
MMX launches Oct 19, 2024, on an H3 rocket from Japan's Tanegashima Space Center, arriving at Mars in August 2027.
## Spacecraft components
The MMX spacecraft includes a propulsion module, exploration module with IDEFIX rover, and return module for samples.
## Phobos landing
MMX will land on Phobos in late 2028 or early 2029 to collect samples using two mechanisms.
## Sample collection
The mission collects at least 10 grams of Phobos material for return to Earth in 2031.
## Phobos and Deimos origins
Scientists debate whether Phobos and Deimos formed from a Mars-impact or were captured asteroids.
## Scientific instruments
MMX uses MEGANE, RAX, miniRAD, and other tools to analyze Phobos' composition and history.
## International collaboration
NASA and ESA provide hardware and communications support for the MMX mission.
## Sample return to Earth
The sample-return capsule lands in Australia's Woomera region in 2031 for laboratory analysis.
## Scientific significance
Phobos samples could reveal Mars' early history and the solar system's formation billions of years ago.
## NASA's role
NASA funds the mission and will receive 15% of returned samples for analysis.
## The science
MMX aims to determine if Phobos formed from Mars or was captured from elsewhere in the solar system.
## Sample analysis
Laboratory analysis of samples will reveal Phobos' composition and potential Martian origins.
## Timeline
MMX lands on Phobos in late 2028, collects samples, and returns to Earth in 2031.
## Key instruments
The MEGANE instrument measures Phobos' elemental composition through gamma-ray and neutron spectroscopy.
## What happens next
Phobos samples will be analyzed in 2031 to understand Mars' early history and solar system formation.
## Key takeaway

Japan's MMX mission will return the first samples from Mars' moon Phobos to Earth in 2031, helping scientists understand the moon's origin and Mars' early history.