what is mars made up of
Besides silicon and oxygen, the most abundant elements in the Martian crust are iron, magnesium, aluminum, calcium, and potassium. Oxidation of the iron dust is what gives the surface its reddish hue.Composite image showing the size difference between Earth and Mars.Credit: NASA/Mars Exploration.he interior of Mars, showing a molten liquid iron core similar to Earth and Venus. Image Credit: NASA/JPL. For thousands of years, human beings have stared up at the sky and wondered about the Red Planet.