The irregular shapes and orbits of Mars’s two small moons, Phobos and Deimos, have long been a subject of scientific curiosity. Recent research suggests that these moons may have originated from ...

This composite image of Pluto, right, and Charon, its largest moon, showcases photos captured by NASA’s New Horizons spacecraft in July 2015. Credit: NASA / JHUAPL / SwRI Unlike how scientists believe ...