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 ...

Mars currently has two satellite moons – Phobos and Deimos – the twin sons of Ares, the god of war (Mars in Roman mythology) ...

The Red Planet will be at its closest point to Earth, also known as perigee, on Jan. 12 and will be exactly opposite the sun ...

Learn about Mars at opposition in January 2025, when the Red Planet is closest to Earth. Discover how to view it, key dates, ...