Stunning pictures of the Red Planet's surface appear to show that the surface has turned a shade of... blue. However, before you grab your telescopes Mars has not changed colour. The latest image taken from NASA’s Mars Reconnaissance Orbiter is presented in enhanced colour to emphasis the composition of the surface.Sand trapped in relative low points in the terrain appears blue, while sedimentary rocks show up pink. The patterns reveal hundreds of layers in sedimentary rocks - of similar thickness - within four craters in the planet's Arabia Terra region.
NASA says the formations hold a record of climate change cycles that have persisted for millions of years on the ancient planet. The shifts in temperature left a rhythmic pattern of thick layers of sedimentary rock, according to the space institute. (Source: Daily Mail)