The red planet
The temperature on Mars can be very, very cold. 
The iron is what gives Mars its red colour. 
Mars has many craters which were formed by meteorites or asteroids hitting it. 
Mars also has some of the deepest valleys in our solar system, and it is the home of Olympus Mons, the largest volcano found in the solar system.  It stands about 27 kilometers high with a crater 81 kilometers wide.
Mars has two moons, Phobos and Deimos.
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