Japan's space agency has successfully launched a groundbreaking spacecraft bound for Mars’ mysterious moons, marking a major step in planetary science with the goal of returning samples from Phobos to Earth.
- First mission to collect and return samples from a Martian moon
- International collaboration including NASA, ESA, CNES, and DLR
- Samples could reveal how Mars’ moons formed and clues about life-friendly conditions
What happened
On October 19, Japan successfully launched its Martian Moons eXploration (MMX) spacecraft from the Tanegashima Space Center. This five-year mission is spearheaded by the Japan Aerospace Exploration Agency (JAXA) with a budget of $578 million, bringing together international partners such as NASA, the European Space Agency, France's CNES, and Germany’s DLR. The spacecraft, weighing about 5 tons, is on course to reach Mars by late summer 2027.
Once arriving, MMX will study Mars’ two small moons, Phobos and Deimos, with a particular focus on Phobos. The mission plans to land on Phobos to collect surface soil samples—a first in space exploration—and then return these samples to Earth by 2031, providing scientists with the opportunity to analyze material from another world.
Why it feels good
The MMX mission represents an inspiring milestone in space exploration and international cooperation, demonstrating humanity’s enduring curiosity and ability to work together beyond national boundaries. By bringing home samples from Phobos, scientists hope to uncover answers about how Mars’ moons were formed, addressing debates about whether they are captured asteroids or debris from Mars itself.
Moreover, materials from Phobos might include fragments ejected from Mars over billions of years, offering unprecedented clues about the Red Planet’s past and possibly the conditions that helped foster life on Earth. This mission serves as a stepping stone for future human missions to Mars by exploring potential bases or staging points around the Red Planet.
What to enjoy or watch next
Keep an eye on updates from JAXA and international partners as MMX approaches Mars in 2027 and begins its experimental landing on Phobos. Exciting details will emerge about the performance of the small French-German rover, Idefix, which will scout the moon’s surface to find a safe landing zone for sample collection.
Looking ahead, the return of the precious soil capsule is planned for 2031 in the Australian desert. The success of this mission will open new frontiers in planetary science and space exploration, promising to deepen our understanding of Mars and its moons while fueling enthusiasm for the future of human space travel.