Though that scenario might have initially seemed to match parts of Mars today, the warm and wet version produced much wider spread valley networks forming everywhere from low-lying regions to more ...

Seybold's study compared valley networks on Mars with valley networks on Earth to see if groundwater was important to forming Red Planet valley connections.

Mars Express imagery of Noctis Labyrinthus, a Martian valley complex. (Image credit: ESA/DLR/FU Berlin & NASA/JPL-Caltech/MSSS, CC BY-SA 3.0 IGO) ...

Struck by the branching, twisting valley networks on the planet, she later noticed a striking resemblance to Arizona's Santa Cruz River system while flying over it.

Mars (yes, the planet) ... LIN: The valley networks on Mars is also formed by high-intensity rainfall. SOLOMON: Just like the Lower Colorado. But river basins aren't shaped by flooding alone, ...

This isn't Mars but Death Valley National Park, one of the hottest and driest places in North America.The two are so strikingly similar that NASA has been using the unique California national park ...

Each scenario led to a very different-looking Mars, with valley origins appearing in drastically different locations. In the ice-melt model, valleys mostly began at high elevations, ...