Published Oct 19, 2026 12:27 PM EDT Japan launches a ground-breaking mission to the Mars moon Phobos today, and you can watch live. The JAXA (Japan Aerospace Exploration Agency) MMX (Martian Moons eXploration) mission aims to collect samples from Phobos, the larger of Mars’ two moons, and deliver it back to Earth for analysis. If successful, the samples could help solve long-standing mysteries about Mars’ moons, including their origin.