It's possible that Mars' moons were originally asteroids that were captured by the planet's gravitational pull. There's also ...

The thick, mineral-rich layers of clay found on Mars suggest that the Red Planet harbored potentially life-hosting ...

NASA's Perseverance rover is digging deeper into Mars' geologic past as it begins grinding into rock surfaces to expose ...

Mars' moons, Phobos and Deimos, are each just a few miles wide and orbit the Red Planet much closer than the moon orbits ...