Mars' moon Deimos is still mysterious a century and a half after its discovery. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Deimos is ...

One summer night in 1877, American astronomer Asaph Hall was looking through his telescope in Washington, D.C. Mars was at ...

ESA's Mars Express orbiter captured footage of the Mars' moon Deimos pass in front of Ganymede, Europa, Jupiter, Io and ...

Deimos follows an almost circular, near-equatorial orbit at a mean distance of 14,576 miles (23,458km) from the center of Mars. Unlike other Mars orbiters, ...

Deimos is tidally locked with Mars, meaning that the same side of Deimos is always facing the same side of Mars. This means that previous probes that visited Mars only studied one side of Deimos' ...

The origin of Phobos and Deimos, the two Martian moons, has been a mystery to astronomers. These two bodies are a fraction of the size and mass of the Moon, measuring just 22.7 km (14 mi) and 12.6 ...

Deimos, the smaller of the two moons of Mars, might be a chip off the old block — quite literally. That’s the conclusion drawn by scientists in the United Arab Emirates, whose Hope orbiter ...