Ancient Mars is coming into sharper focus as a planet laced with rivers, deltas and vast drainage basins, and that new map of its watery past is rapidly reshaping where scientists intend to look for ...

Mars, now a dusty world of rusted rock and thin air, once carried enough water to transform its face into something far more familiar. New mapping of ancient river systems indicates that a vast ...

New research has mapped 16 extensive, interlaced river systems on Mars, dating back approximately 3.7 billion years to the Early Hesperian Period. These large river systems, despite covering only ...