Phobos – One of the two moons of Mars
Phobos – One of the two moons of Mars resembles its shape potato cratered. Red Planet caught the flying asteroid and made it their satellite. Phobos looks like it went through a herd of worms, because the inside is full of holes. The object awaits the sad fate of Mars, Phobos still draws closer and for approx. 50 million years, tidal forces of Mars moon tear to shreds. Thanks to the Red Planet will become a decoration in the form of a ring.
Earth larger compared Mars – Red Planet very small
Earth larger compared Mars – The Red Planet is very small compared to the Earth – is only one-tenth its mass. 15% of the volume and half the size. It is a mystery, because according to the traditional theory of planet formation distribution of the material in the protoplanetary disk (the disk around the star where planets are formed) should be equal. This would mean that Mars should be like Venus and Earth. Why not? In the region of our solar system, which was built had to be relatively little material.
It is possible that this was due to the migration of Jupiter and Saturn, which astronomers suspect is that at the beginning of its history, went towards the sun. To then return to their orbits, sweeping the road dust from orbit forming a Mars. The new theory does not imply interference gas giants, scientists say Mars began to form near the present orbit of the Earth. But then gravitational forces pushed the go further, where there was a lower density of the protoplanetary disk.