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Any opinions, 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?
Max
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.
Joy Crisp
Project Scientist
Mars Exploration Rovers