Des courants de dioxyde de carbone? The liquid on ancient Mars might not have all been water.
Carbon dioxide rivers? Ancient Mars’ liquid may not all have been water (Image Credit: Space.com) Scientists are rethinking a long-held belief that the liquid responsible for shaping Mars’ surface must have been water. For decades, evidence like massive outflow channels, ancient river valleys, deltas and lakebeds have suggested Mars had a watery […]