Ancient shoreline features hint that water on Mars once formed a vast ocean.

Mars is absolutely dripping with evidence that the red planet was once a striking blue, complete with glistening lakes, ...

Three billion years ago, you could have stood on Mars and watched a river spill into a sea. That picture is still speculative ...

Data collected by China’s Zhurong rover has provided new evidence that Mars may once have hosted large oceans. Subsurface ...

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

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

Scientists have traced ancient Martian shorelines inside a giant canyon, revealing where a vast ocean once stood and why ...

Billions of years ago, water flowed across Mars. Most scientists agree the red planet had rivers. But did those rivers flow into an ocean? New research from the University of Arkansas found strong ...

Learn how researchers were able to use a climate model to uncover information about water on ancient Mars.

Thin, seasonal ice may have protected ancient lakes on Mars, allowing liquid water to last for decades despite cold ...

The recent announcement that scientists have spotted what they believe to be evidence suggesting ancient life on Mars seemed like the latest in an endless cycle of tantalizing hints followed by pleas ...