106K views · 3K reactions | Mars, the fourth planet from the Sun, boasts two small yet captivating moons—Phobos and Deimos. These Martian companions, unlike Earth's moon, are irregularly shaped and significantly smaller, with Phobos being the larger of the two. Hovering closely above the Martian surface, Phobos completes an orbit in a remarkably swift seven hours, casting fleeting shadows on the rust-colored landscape. | The Brain Maze | Facebook

JAXA's upcoming Martian Moons eXploration (MMX) spacecraft will launch in 2024 on a mission to study Mars' two moons and return samples of Phobos to Earth. One of MMX's two sample collection devices is PlanetVac, a technology Planetary Society supporters around the world helped enable by funding tests in 2013 and 2018. This computer animation shows the steps MMX will take to get to Mars and back. What questions do you have about Mars' moons? Here's your guide to MMX: planetary.org/space-missions