Japan prepares MMX spacecraft launch to collect samples from Martian moon Phobos
The Japanese space agency is set to launch a mission to collect soil from Phobos to resolve scientific debate over how the Martian moons formed.
FTMQ Science, written by our newsroom0 views

Japan is preparing to launch the Martian Moons eXploration spacecraft on October 20 to gather soil samples from Phobos, the largest moon of Mars. New Scientist and India Today both reported the scheduled launch date for the mission, which will lift off from the Tanegashima Space Center in Japan. New Scientist reported that the probe is scheduled to reach Mars in August 2027. [1][6][8]
The mission aims to resolve long-standing questions regarding the origin of the two small, irregularly shaped moons of Mars, Phobos and Deimos. Phys.org noted that scientists are uncertain whether these celestial bodies were asteroids captured by gravity or debris produced when a large body collided with Mars early in its history. Nature World News reported that the probe will use compressed nitrogen gas blasts to collect physical soil samples from the surface of Phobos. [1][2][5][9]
The Japan Aerospace Exploration Agency announced the robotic space probe project in June 2015. In addition to collecting samples from Phobos, the probe is designed to perform flyby observations of Deimos and monitor the atmosphere of Mars. India Today reported that the collected rock and soil samples are expected to return to Earth in 2031. [6][7]
In short
- The MMX spacecraft is scheduled to launch from Tanegashima Space Center on October 20.
- The mission will collect surface samples from Phobos using pressurized nitrogen gas.
- Scientists aim to determine if Phobos and Deimos are captured asteroids or impact debris.
- Samples collected by the probe are projected to return to Earth in 2031.
Sources
Every paragraph above points to the numbered items it rests on. Read the originals here.
- [1]Japan is launching a mission to Mars’s largest moon PhobosNew Scientist, 9h ago (the report this story comes from)
- [2]How did Mars get its moons? Japan's MMX space mission aims to solve the puzzlePhys.org, 1d ago
- [3]Japan’s MMX mission aims to swipe soil samples from Mars’ moon PhobosThe Conversation, 16h ago
- [4]Japan prepares to launch sample return mission to PhobosAstronomy.com, 6h ago
- [5]Japan's MMX Mission Will Use Bursts of Nitrogen Gas to Grab Soil From Phobos and Test How Mars Got Its MoonsNature World News, 5h ago
- [6]Japan to launch spacecraft to Martian moon Phobos on Tuesday, bring back rocks in 2031India Today, 15h ago
Background
- [7]Martian Moons eXploration on Wikipedia
- [8]Japan on Grokipedia
- [9]Mars on Grokipedia
Our newsroom writes these reports with the help of software, from the 9 sources listed and nothing else, and checks them against those sources. Facts can still be wrong or move on; the originals are the record. Spotted a mistake? Write to daniel@monsterkong.com.
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