05, Jul, 2009
Mars Moons |
| Tuesday, 19 December 2006 21:09 | |||
Phobos and DeimosThe Moons of Mars
It has two large craters that humans call Stickney and Hall.
|
Mars Moons |
| Tuesday, 19 December 2006 21:09 | |||
Phobos and DeimosThe Moons of Mars
It has two large craters that humans call Stickney and Hall.
|
Phobos is the largest of the two moons of Mars, discovered by humans in 1877 by Asaph Hall. It is a dark, irregular body that measures 27 x 22 x 19km (17 x 14 x 12 miles) and is thought to be an asteroid caught in the gravity field of Mars.
Deimos is the outermost and smallest of the two moons of Mars; like Phobos, it is believed to be an asteroid captured by the gravity of Mars - they both have similar properties in their surface materials to bodies found in the asteroid belt, blackish carbonaceous chondrite or C-Type asteroids.