what is mars made of
Making the world better, one answer at a time. Mars is made of rock and iron oxides. It's surface is covered in mountains, volcanoes, valleys, ice caps and dried up river beds. Mars is also very dry like a desert. It is also red because of the iron oxide in the pulverized rock dust. Mars is made of rock and iron oxides. It's surface is covered in mountains, volcanoes, valleys, ice caps and dried up river beds. Mars is also very dry like a desert. It is also red because of the iron oxide in the pulverized rock dust.
Mars' atmosphere is mostly made up of a thin layer of carbon dioxide, which makes up 95.32% of the atmosphere, with 2.7% of nitrogen and then very small amounts of other gasesâ¦ such as argon, oxygen, carbon monoxide and water vapor.