Mars SHOCK: 'Life on Red Planet' was much more recent than originally thought
Lighter-toned bedrock that surrounds cracks and fissures in the surface suggests the red planet had liquid longer much longer than previously thought - because it left behind halo-like rings of silica. The new finding is reported in a paper published today in Geophysical Research Letters, a journal of the American Geophysical Union. Jens Frydenvang, a scientist at Los Alamos National Laboratory and the University of Copenhagen and lead author of the paper, said: "The concentration of silica is very high at the centrelines of these halos. Mars was covered in water far longer than previously thought, say scientists "What we're seeing is that silica appears to have migrated between very old sedimentary bedrock and into younger overlying rocks. "The goal of NASA's Curiosity rover mission has been to find out if Mars was ever habitable, and it has been very successful in showing that Gale crater once held a lake with water that we would even have been able to drink, b...