Japan launches Phobos sample mission — SkimNews
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- Japan Aerospace Exploration Agency (Jaxa) successfully launched the Martian Moons Exploration (MMX) spacecraft aboard the H3 rocket from Tanegashima island at 4:41am, marking the start of a mission to return samples from Phobos.
- MMX spacecraft will reach Mars’s orbit in August 2025, deploy a French-German rover named Idefix, and attempt to collect at least 10g of surface material from Phobos during a two-hour landing window.
- Five space agencies are collaborating on the $578 million mission, including Nasa and the Germany Space Agency, with the rover chief Markus Grebenstein calling it a 'once-in-a-lifetime chance'.
- Idefix rover, named after the Asterix comic character, will survey Phobos for 100 days to identify safe landing and sampling sites before the main lander arrives.
- Scientists hope the returned samples will resolve whether Phobos and Deimos formed from a giant impact or were captured asteroids, offering clues about how habitable environments arose on terrestrial planets.
- Nasa noted the mission’s findings will help shape future crewed Mars expeditions, even as its own Mars sample return has stalled due to a congressional decision under the Trump administration.
Why it matters: This mission gives Japan and its international partners the first shot at returning material from the Martian system, with findings directly influencing the scientific and logistical planning for human missions to Mars—while the U.S. and China race separately to return samples from Mars itself by 2031.
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