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The Martian Moons eXploration (MMX) is an ambitious spacecraft mission led by the Japan Aerospace Exploration Agency (JAXA) to study the two moons of Mars.
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Firstpost•19-10-2026, 09:26
Japan Launches Ambitious MMX Mission to Bring Mars Moon Phobos Sample to Earth
  • •Japan's MMX spacecraft is scheduled to launch aboard an H3 rocket to collect material from Mars' moon Phobos and return it to Earth.
  • •If successful, this will mark the first time a sample from Mars or its moons has been delivered to laboratories on Earth for analysis.
  • •The mission involves deploying a small rover named IDEFIX to explore Phobos, facing unique challenges due to extremely weak gravity and proximity to Mars.
  • •Scientists hope the mission will resolve the debate over whether Phobos and Deimos are captured asteroids or the result of an ancient planetary collision.
  • •The sample-return capsule is expected to land in the Woomera desert of South Australia in 2031 carrying at least 10 grams of moon dust.

Key Questions Answered

The Mars Moons Exploration spacecraft aims to collect material from Phobos, one of Mars' moons, and deliver the sample back to Earth for laboratory analysis. Should it succeed, it will mark the first time a sample from Mars or its moons is brought to Earth.

The sample-return capsule containing moon dust from Phobos is due to return to Earth in 2031 and land in the Woomera desert of South Australia.

Scientists suggest either that the moons are primitive asteroids captured by Mars' gravity, or that they formed from a debris disc created by a massive ancient collision involving Mars. The MMX mission aims to resolve this puzzle by examining their chemical composition.