findings, conclusions, or recommendations expressed in this material are
those of the developer, PASSPORT TO KNOWLEDGE, and do not necessarily
reflect those of the National Science Foundation.
PASSPORT TO KNOWLEDGE - To MARS with MER
Why is Mars red?
Fort Collins, CO
My friend Justin Mackie did a careful study at the Pathfinder landing site looking at the pictures and he determined that the true color is actually yellowish brown and that color is coming from iron rich minerals in the soil and that iron is very oxidized. You can think of it as sort of a rust.
Mars Exploration Rovers