Mars is orbited by two small, irregular moons named Phobos and Deimos—named after the mythological sons of Ares representing fear and terror. Unlike Earth’s large Moon, these tiny worlds look more ...

Mars’ moons are easily visible at night from the surface of the Red Planet. Phobos – the nearer, larger, and brighter of the two – would be obviously non-round. A sharp-eyed observer would be able to ...

A space probe flying past Mars captured images of the red planet's small, mysterious moon. While on a flyby of Mars, Hera was able to use three of its imaging instruments to capture images of Deimos, ...