Plate Nº 54 · recorded October 20, 2026
Space & AstronomyReported finding
MMX Launches: First Mission to Land on Mars's Moon Phobos
JAXA's MMX spacecraft launched on 20 October 2026 to orbit Phobos, collect the first samples from a Martian moon, and return them to Earth.
By Priya Raman3 min read616 words
In brief
- MMX launched on an H3 rocket from Tanegashima at 04:41 JST on 20 October 2026.
- The mission will be the first to orbit Phobos, the first to sample its surface, and the first to return from the Mars system.
- MMX is led by JAXA with NASA, CNES, DLR and ESA as partners.
- ESA provided deep space communication equipment and Estrack ground station support.
- Arrival at Mars is expected in summer 2027 to study Phobos and Deimos.
At 04:41 Japan Standard Time on 20 October 2026, an H3 rocket rose from the Tanegashima Space Center and carried the Martian Moons eXploration spacecraft — MMX — onto its path toward Mars. If everything proceeds to plan, the mission will achieve three firsts: the first spacecraft to orbit the moon Phobos, the first to collect samples from its surface, and the first to return to Earth from the Mars system at all.
The launch took place in darkness before dawn on the Japanese island of Tanegashima, thrusters firing against a black sky, a beach in the foreground of the ascent. JAXA, the Japan Aerospace Exploration Agency, broadcast the liftoff live. In Europe, engineers and scientists watched at 21:41 Central European Summer Time on 19 October.
What did the partners say?
"I would like to congratulate JAXA and the entire MMX team for this successful launch," said Professor Carole Mundell, Director of Science at the European Space Agency (ESA).
"The launch was spectacular, and JAXA's H3 launcher performed fantastically to send MMX onward to Mars," said Elliot Sefton-Nash, ESA Project Scientist for MMX. "The team are celebrating, and now even more motivated to prepare for arrival at Mars next summer to start investigating its moons Phobos and Deimos up close."
That arrival window, in the summer of 2027, marks the transition from cruise to the mission's scientific core: close investigation of the two small Martian moons.
Who is flying the mission?
MMX is led by JAXA, working in collaboration with:
- NASA, the National Aeronautics and Space Administration of the United States
- CNES, the French space agency
- DLR, the German Aerospace Center
- ESA, the European Space Agency
For ESA, the mission carries a particular status. It participates as a Mission of Opportunity within ESA's Science Programme — a framework that allows the agency to join an externally led mission with a defined, focused contribution rather than building its own spacecraft.
ESA's contribution is concrete. The agency provided the spacecraft's deep space communication equipment, the hardware that keeps a vessel in contact with Earth across tens of millions of kilometres. It also supplies ground station support through the Estrack network, the chain of antennas ESA operates to send commands to distant spacecraft and receive their data.
What will the mission actually do?
The scientific work begins well before any sample touches Earth. European scientists appointed by ESA join the mission science team directly. Their responsibilities span three areas: planning the observations MMX will make, analysing the data collected by the spacecraft's onboard instruments, and studying the samples that Phobos yields.
Phobos itself is the central target. It is the larger of Mars's two moons, a small, irregular body whose origin remains unsettled — a question the returned samples are expected to address. MMX will orbit Phobos, observe it at close range, and collect material from its surface before making the return journey to Earth.
Deimos, the smaller and more distant of the two moons, also falls within the mission's scope for close investigation.
Why do the samples matter?
A sample returned to Earth differs fundamentally from a measurement made remotely. Instruments in terrestrial laboratories can examine Martian moon material with a precision no onboard device can match. Every subsequent question the samples answer — about Phobos's composition, its history, its relationship to Mars — depends on the material arriving safely home.
The mission therefore ends not at Phobos, and not even at Mars, but in laboratories on Earth, where European researchers will join their international colleagues in studying what the spacecraft carries back.
The launch is done. The journey, next summer's arrival, and the sampling campaign ahead remain.
By Priya Raman
via youtube.com (Original)
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Senior reporter covering people, launches and day-to-day practice in general science news at SciBeat.
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