slug: “japan-mmx-mars-moon-mission-launch”
category: “World”
headline: “Japan to Launch Historic MMX Mission to Bring Back Samples From Mars’s Moon Phobos”
seo_title: “Japan MMX Mars Moon Mission to Launch on Oct 20”
meta_description: “JAXA’s unmanned MMX probe lifts off Oct 20 on an H3 rocket to collect at least 10 grams from Phobos, the first round trip to the Martian system.”
focus_keyphrase: “Japan MMX Mars moon mission”
image_url: “hourly-1132-japan-mmx-mars-moon-mission-launch.webp”
image_credit: “Image: JAXA/ESA via Universe Magazine”
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Japanese scientists are preparing to launch the Japan MMX Mars moon mission to retrieve samples that could help explain the origins of the solar system and life on Earth, in what aims to be the first round trip to the Martian region.
The flagship H3 rocket carrying the MMX is set to blast off from the Tanegashima Space Centre on Tuesday at 4:41 am local time (00:41 PKT), according to the Japan Aerospace Exploration Agency (JAXA).
Japan MMX Mars moon mission: what the probe will do
After arriving near Mars a year later, it will orbit Phobos for up to three years before collecting at least 10 grams of material.
A rover dubbed IDEFIX, the French name for the comic hero Asterix’s dog, will first conduct surface observations aimed at ensuring a safe landing.
“The sampling (from) Phobos is of course the world’s first, but it means… this is the first round trip to the Martian system,” MMX project manager Yasuhiro Kawakatsu told AFP.
JAXA said the mission will also explore the possibility of using Phobos as a “natural space station” for crewed Mars exploration. It will observe the Red Planet’s other moon, Deimos, without landing, before returning to Earth.
Impact or capture: the mystery of the Martian moons
JAXA hopes the mission will reveal how Mars and its two moons formed, a key piece of knowledge in working out how the solar system was born.
One theory for the origin of the Martian moons, the “giant impact” hypothesis, is that they formed after a celestial body collided with Mars. The “capture” hypothesis, meanwhile, postulates that the moons are asteroids captured by Mars’s gravity.
Determining which is right will help reveal “how a habitable environment for life might have arisen on the terrestrial planets”, JAXA said, referring to Mercury, Venus, Earth and Mars, the four rocky worlds closest to the Sun.
“MMX will shed light on the transport mechanisms that delivered water, volatiles, and organic compounds from the outer solar system to the inner rocky planet region — processes that may have played a key role in making these worlds habitable,” said Patrick Michel, a French astrophysicist working on IDEFIX.
“If Phobos and Deimos are indeed remnants of these early delivery systems, they may hold clues to the origins of life itself, or, to be more correct, to the transport of the materials that were key to the emergence of life on rocky planets,” he told AFP.
Deep in the gravity well
MMX is a collaboration with France’s National Centre for Space Studies (CNES), the German Aerospace Centre (DLR), NASA, the European Space Agency (ESA), and about 20 universities and tech companies.
Landing will be tricky: gravity on Phobos is extremely weak, and JAXA scientists call reaching it a journey deep into the “gravity well”.
Japan also has experience in bringing back samples from space, including JAXA’s unmanned Hayabusa-2, which returned 5.4 grams of rock and dust collected from an asteroid several hundred million kilometres from Earth in 2020.
A race for Martian samples
The launch comes as the global race to return Martian material intensifies. NASA’s Perseverance rover has been roaming the Red Planet since 2021 and has already collected samples. But the US Mars Sample Return mission was effectively cancelled by the Trump administration following a congressional vote in January.
China, meanwhile, has announced its Tianwen-3 spacecraft is scheduled for launch around 2028 and hopes to return Mars samples to Earth as early as 2031, potentially before the MMX’s return.
JAXA scientists say sand and rocks from Phobos may offer a wider variety of samples than those on the planet itself, especially if it was formed by a collision between a celestial body and Mars. With NASA’s programme grounded, Japan’s mission now stands as the most realistic near-term path to bringing Martian-system material back to Earth.
The launch comes amid a busy stretch in world news, from Trump’s 60-day pause on Russia sanctions to the attack on European diplomats in the West Bank and Gulf states rallying around Saudi Arabia’s defence.
Source: Dawn
When does the Japan MMX Mars moon mission launch?
The H3 rocket carrying MMX lifts off from the Tanegashima Space Centre at 4:41 am local time on Tuesday (00:41 PKT).
What will MMX collect from Phobos?
The probe will land on Phobos and collect at least 10 grams of surface material, the first sample from a Martian moon, after the French IDEFIX rover scouts a safe landing site.
Why does the mission matter?
Phobos samples could settle whether Mars’s moons are captured asteroids or debris from a giant collision, shedding light on how water and organic compounds reached the rocky planets.
