Mars' moon Phobos may actually be a comet — or at ... is characteristic of many airless solar system objects. Also, the researchers found that Phobos's surface was porous, like sand.

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 ...

irregularly shaped moon and smaller than Mars' other moon, Phobos. Despite being unspectacular, Deimos remains a fascinating mystery. Deimos is one of only three moons in the inner solar system ...

Mars also lacks an active plate tectonic system, the geologic engine that drives ... the red planet gained its two small and irregularly shaped moons, Phobos and Deimos. The two lumpy worlds ...

Phobos and Deimos – these names from Greek mythology were given to the moons of our neighbouring planet Mars, discovered in 1877 by the US astronomer Asaph Hall. Besides Earth's Moon, they are the ...

Computer simulations suggest that Mars' puzzling moons, Phobos and Deimos ... of Phobos and Deimos — the only moons in our solar system that orbit a rocky planet besides Earth's," Jacob ...

Mars is the fourth planet from the sun in our solar system and is called the Red Planet ... It has two moons, Phobos and Deimos. This story was updated to add new information.