The distance between Mars and the Sun is 227 million kilometres.
Mars is 687 days to go around the sun.
Mars or the red planet is the fourth biggest planet in the Milky Way.
It is about half the size of the Earth.
The planet is named by Mars, the Roman god of war.
The average temperature on Mars is -65 °C.
The Moons:
In centuries astronomers thought that Mars had moons, but no one could find any. In 1877 managed an astronomer, Asaph Hall, to find them. He used a very strong telescope, and he named them Phobos and Deimos, though the Moons are so small that they maybe just are some asteroids orbiting around Mars. Phobos is about 27 km long and Deimos is 16 km. long. Some says that Phobos, the smallest of the moons, someday will crash down on Mars.
Water on Mars:
Some scientists say that there has bin water on Mars. Billion years ago the planet froze down and all the water froze.
Two satellites have found hydrogen in the ground, and that is a big clue that there maybe has bin water on Mars. Satellites have also found ice under the surface. Maybe there has bin water on Mars.
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