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 ...

DEADLY space radiation and rapid outbreaks of disease are just a few of the official Nasa dangers that visitors to Mars will ...

Another hypothesis is that Phobos and Deimos formed very much like Earth's moon did — that an impact on the surface of Mars threw debris into orbit that eventually coalesced into the two moons.

For much of North America, this enchanting phenomenon will be visible as the moon temporarily hides Mars from view. Known as a lunar occultation, this event occurs only about once every 14 years ...

This year, we were treated with a total solar eclipse, fantastic displays of the northern lights, spectacular meteor showers ...

A world-leading designer of space robots says gigantic new rockets being tested by billionaires Elon Musk and Jeff Bezos are ...

The president’s Inaugural Address linked landing on the Red Planet with Manifest Destiny, but left many of the specifics ...

Next year's first astral spectacle comes early, on Jan. 3, when the Quadrantid meteor shower peaks. Considered one of the most impressive annual meteor showers to witness, the event can produce ...