Deimos is Mars' outer moon. It's a tiny, irregularly shaped moon and smaller than Mars' other moon, Phobos. Despite being unspectacular, Deimos remains a fascinating mystery. Deimos is one of only ...

For years, researchers have puzzled over the origins of Phobos and its twin, Deimos ... our moon, gouged the duo out of the Red Planet; but Phobos has a different chemical composition from ...

Earth's moon orbits at an average distance ... Hopefully, the MMX mission will tell us about the composition of Phobos (and presumably, by proxy, Deimos), which will provide a big clue as to ...