Because the ice is thin and temporary, it would leave little evidence behind, which could explain why rovers have not found ...

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

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

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

Mars – dusty, dry, and desert-clad – was once so rich in water it had not just lakes, but oceans, according to a new study. Observations using ground-penetrating radar have revealed underground ...

A study using radar data from China's now-dead Zhurong rover finds strong evidence that Mars had a stable ocean in the ancient past. Scientists have used orbiters and rovers to find dried streams, ...

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 ...

A hypothetical picture of Mars 3.6 billion years ago, when an ocean may have covered nearly half the planet. The blue areas show the depth of the ocean filled to the shoreline level of the ancient, ...

Seismic data collected by NASA suggests the amount of water hidden in the red planet's crust would cover its surface in a global ocean. Evidence is mounting that a secret lies beneath the dusty red ...

In the 1970s, images from the NASA Mariner 9 orbiter revealed water-sculpted surfaces on Mars. This settled the once-controversial question of whether water ever rippled over the red planet. Since ...

Mars may have been a prime vacation spot millions of years ago, according to a new study on its coastal deposits. The data came from China’s Zhurong rover, which landed on the Red Planet on May 14, ...