Moons of Mars
Videos
The two moons of Mars are Phobos and Deimos. They are irregular in shape. Both were discovered by American astronomer Asaph Hall in August 1877 and are named after the Greek mythological twin characte
Asaph Hall III, discoverer of Phobos and Deimos
The apparent sizes of the moons of Mars, Deimos and Phobos, and the Moon as viewed from the surface of their respective planets. Mars's moons as imaged by the Curiosity rover, 1 August 2013
Phobos, with Stickney Crater on the right (2003)
Comparison between Phobos (top) and Deimos (bottom) (2005)
Deimos (moon)
Videos
Deimos is the smaller and outer of the two natural satellites of Mars, the other being Phobos. Deimos has a mean radius of 6.2 km and takes 30.3 hours to orbit Mars. Deimos is 23,460 km from Mars, muc
Moons of Mars
…The two moons of Mars are Phobos and Deimos. They are irregular in shape. Both were discovered by American astronomer Asaph Hall in August 1877 and are named after the Greek mythological twin…
Deimos, captured by the Mars Reconnaissance Orbiter in false color
Asaph Hall III, discoverer of Deimos
Deimos transits the Sun – as viewed by the Mars rover Opportunity (4 March 2004)