No, it's Earth. China, to be exact. I got this from TIME.com
Out of This World This unique geological phenomenon, known as a Danxia landform, can be seen in several places in China. This example is located in Zhangye, Gansu Province. The color is a result of millions of years of accumulated red sandstone and other sediments that have dried and oxidized.
A little sword-&-planet inspiration, though, eh? ;)