source: http://mashable.com/2012...

source: http://www.dailymail.co.uk/sciencet...

source: http://1.bp.blogspot.com

source: http://n-a-s-a.tumblr.com/post...

source: http://news.discovery.com/space...

source: http://en.wikipedia.org/wiki...

source: http://theinternetaccordingtoa...

“Victoria Crater at Meridiani Planum. The crater is approximately 800 meters (about half a mile) in diameter. Layered sedimentary rocks are exposed along the inner wall of the crater, and boulders that have fallen from the crater wall are visible on the crater floor. NASA's Mars rover Opportunity explored this crater and its walls in 2006.” (NASA/JPL/University of Arizona)

source: http://www.boston.com/bigpictu...

source: http://www.mymodernmet.com/profiles...