# Japan Launches Ambitious MMX Mission to Explore Martian Moon Phobos JAXA initiates a historic sample-return mission to uncover the origins of Mars' moons. - **Source:** [Popular Science](https://www.popsci.com) - **Published:** 2026-10-19 - **Topic:** [Business](https://brifing.si/c/business) - **Original article:** - **On Brifing:** https://brifing.si/s/b112e772-1119-4879-aea2-0484133318f8 ## JAXA Initiates MMX Mission The Japan Aerospace Exploration Agency is launching the Martian Moons eXploration mission today from the Tanegashima Space Center. Utilizing an H3 rocket, the spacecraft aims to reach Phobos, the larger of the two Martian moons. This mission represents a significant technological leap in deep space exploration and planetary science for the Japanese space agency. ## Scientific Objectives and Origins The primary goal is collecting surface samples from Phobos to determine its mysterious origin. Astronomers have debated for decades whether these moons are captured asteroids or debris from the solar system's formation 4.5 billion years ago. Analyzing these physical samples back on Earth will provide definitive data to resolve these long-standing celestial formation theories. ## Strategic NASA Collaboration While the mission is led by JAXA, NASA has provided critical instruments and technological assistance to ensure success. Nicky Fox, associate administrator at NASA, emphasized that this partnership will generate paradigm-shifting science. This collaboration supports broader international efforts as NASA prepares for future human exploration missions to the surface of the Red Planet. ## Historical Context of Moons Phobos and its smaller sibling Deimos were first discovered by American astronomer Asaph Hall in 1877. Their names derive from ancient Greek terms meaning fear and dread, respectively. Despite centuries of observation, the exact formation mechanisms of these bodies remain unknown, making this upcoming sample-return mission a vital milestone for modern planetary astronomy. ## Mission Timeline and Logistics The spacecraft is scheduled to arrive at the Phobos orbit in August 2027. Following arrival, the probe will spend at least 16 months conducting a detailed survey of the moon's surface. This extended observation period is necessary to identify the optimal site for sample collection before the final return phase begins for the mission. ## Sample Return Expectations The return of the collected samples to Earth is not expected until at least 2031. This multi-year timeline accounts for the complex orbital mechanics and the technical requirements of the return journey. Once the samples arrive, researchers will perform rigorous laboratory analysis to unlock secrets that have remained hidden for billions of years. ## Viewing the Live Launch The launch is scheduled for 3:41 p.m. EDT, which corresponds to 4:41 a.m. Japan Standard Time on October 20. Interested viewers can watch the entire launch process live via the official JAXA YouTube channel. This broadcast provides global access to witness the H3 rocket's ascent and the start of this historic interplanetary journey. ## Future Impact of Exploration This mission marks a pivotal moment for international space cooperation and scientific discovery. By successfully retrieving material from a Martian moon, JAXA will provide data that informs future human missions to Mars. The results will influence planetary science for generations, establishing a new foundation for understanding the evolution of our solar system's complex environments. ## Sources covering this story - https://www.popsci.com/science/how-to-watch-japans-mission-to-mars/ — --- _Summary written by Brifing from the original reporting. Copyright in the original article belongs to its publisher; read the full piece at the link above._