Scientists edge closer to answering Mars’ biggest question: Did life ever exist on the red planet? Here's the latest from two ...

A huge geological structure on Mars resembling a bathtub ring may be evidence of an ocean that once covered a third of the ...

Using images from cameras on Mars orbiters, an international research team has discovered structures on Mars that are very similar to classic river deltas on Earth. These are traces of rivers ...

NASA’s Curiosity rover finds complex carbon compounds in ancient Martian rock, deepening the mystery of life on the Red ...

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 ...