why is mars red – Evolution Zone

Question: why is mars red
- Keywords:
  colour,
  mars,
  planet,
  red
Asked by chiara728 to Ed on 23 Jun 2011.
- Ed Morrison answered on 23 Jun 2011:
  
  I think it’s because of iron in the soil. You know how when a nail gets rusty it goes browny red. This is because of the formation of iron oxide. Mars has a lot of iron oxide on the surface so looks red.

Question: why is mars red