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.
Note: There are comments associated with this question. See the
discussion page
to add to the conversation.
This answer is closed to changes. This is done in rare cases when questions are being vandalized or answers have become debates. E-mail reopen @ answers.com (no spaces) if you would like it to be reopened.
In 1976, the Viking landers sampled the atmosphere of Mars and determined the following composition:
95.32% carbon dioxide; 2.7% nitrogen; 1.6% argon; 0.13% oxygen; 0.07% carbon monoxide; 0.03%...