Simulated collisions reveal how Phobos could preserve rocks blasted off Mars

Simulated collisions reveal how Phobos could preserve rocks blasted off Mars

Mars has two small moons, Phobos and Deimos, but their origins remain uncertain. Were they asteroids captured by Mars' gravity, or did they form from debris following a giant impact on the planet?

phys.org/news/2026-11-simulated-collisions-reveal-phobos-blasted.html