As a result, an astronaut on Mars would see Phobos rising in the west and setting in the east. Deimos orbits Mars at an altitude of approximately 23,500 kilometres and has an orbital period of just ...

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' moon Phobos may actually be a comet — or at least part of one — that was gravitationally captured by the Red Planet long ago, a new preprint study based on previously unpublished photos ...

Mars is probably smaller than you think. It's just half the size of Earth, with barely a third of its mass. Even the Martian moons Phobos and Deimos are petite, measuring just a few kilometers in ...

Deimos, the smaller of the two moons, orbits Mars every 30 hours and is less than 10 miles across. Its larger sibling Phobos bears many scars, including craters and deep grooves running across its ...

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 ...

DEADLY space radiation and rapid outbreaks of disease are just a few of the official Nasa dangers that visitors to Mars will face. The space agency holds a list of “five hazards of human ...

The spacecraft compiled the most complete map of the chemical composition of Mars’ atmosphere, observed the planet’s moons Phobos and Deimos in detail, and traced the history of water across ...