Using images from cameras on Mars orbiters, an international research team has discovered structures on Mars that are very ...

Mars, now a dusty world of rusted rock and thin air, once carried enough water to transform its face into something far more ...

New research suggests Mars was once a blue planet, as scientists identify river deltas and signs of a vast ancient ocean on ...

Swiss Research Team Discovers Evidence Of Ocean On Mars. A research team from the University of Bern has discovered traces of ...

Mars once had sprawling river systems that rivaled major watersheds on Earth, and scientists have now identified the biggest ones for the first time. Researchers mapped 16 massive drainage basins ...

Long before Mars turned into the frozen desert you see today, water shaped its surface in dramatic ways. Rivers cut through highlands, lakes pooled inside craters, and floods tore open canyon walls.

Billions of years ago, it rained on Mars. The water collected in valleys and rivers, filled and spilled over the rims of craters, and was funneled into canyons, perhaps even making its way to a large ...