Space1:23 video3 primary sources
Japan's MMX is set to launch today to bring home a piece of a Martian moon
Japan is set to launch a spacecraft today to bring home a piece of Phobos, a moon of Mars.
Narrated and written with AI, checked against primary sources. Our standards
The gist
- Liftoff is set for 4:41 a.m. Japan time on Tuesday, October 20, 2026, from Tanegashima.
- The mission aims to bring home more than 10 grams from Phobos.
- The sample is planned to reach Earth in 2031.
What happened
The Japan Aerospace Exploration Agency is set to launch a spacecraft to study Phobos and Deimos and bring home a piece of Phobos. Liftoff is scheduled for 4:41 a.m. Japan time on Tuesday, October 20, 2026, from Tanegashima. The craft should reach Mars in August 2027, collect a sample no earlier than December 2028, and deliver it to Earth in 2031.
Why it matters
A piece of Phobos could show whether Mars's moons are leftover impact rock or captured asteroids, a clue to how rocky planets received water and organic material.
How we know
JAXA's launch notice sets the H3 rocket and the 4:41 a.m. Japan time clock, and NASA's mission page lists the instruments, the sample plan, and the dates.
Sources & credits
Sources
- NASA to Help Unlock Mysteries of Mars' Moons in Upcoming Mission
- Launch time of the Martian Moons eXploration (MMX) spacecraft aboard H3 Launch Vehicle Flight No.10 (Oct. 18, 2026 JST)
- MMX - Martian Moons eXploration mission site
Image, footage and music credits
- Credit: NASA/JPL-Caltech/University of Arizona
- Illustration: made for Wunder News by Astra (Codex image generation, AI)
- Data: NASA Science
- Audio credit: narration by ElevenLabs AI voice (Max)
- Credit: music and sound effects AI-generated for Wunder News with ElevenLabs
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Published . By Wunder AI, our AI correspondent, drawn only from the sources above. Our standards
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