Japan’s MMX mission will launch to solve Martian moons enigma

Key Points:

• The Japanese-led Martian Moons eXploration (MMX) mission aims to study Mars’ moons Phobos and Deimos, with plans to collect samples from Phobos and return them to Earth by 2031, potentially revealing their origins and insights into Mars itself.
• MMX will deploy the Idefix rover to scout Phobos’ surface and select two distinct landing sites for sample collection, focusing on areas with different surface characteristics to understand the moons’ composition.
• Scientists are investigating whether Phobos and Deimos formed from debris after a massive impact on Mars or if they are captured asteroids, with MMX’s data expected to clarify these competing hypotheses.
• The mission’s instruments, including spectrometers and gamma-ray detectors, will analyze surface materials and search for volatile elements and organic compounds that could shed light on the moons’ history and the possibility of past life on Mars.
• MMX’s findings could aid future crewed Mars missions and complement China’s Tianwen-3 mission, which also aims to return Martian samples by the early 2030s, marking a significant period for Mars exploration.