Ancient ripples suggest a warmer, wetter past for the Red Planet that supported open water on its surface.

NASA's Rover found ripples in Martian rock that resemble the wave patterns on a sandy lake bed on Earth. The ripples could ...

The signs of wave ripples in the sandy shores of ancient lake beds, created as wind pushed water back and forth have been found on Mars providing evidence that there were open bodies of water, not ...

"The shape of the ripples could only have been formed under water that was open to the atmosphere and acted upon by wind," says postdoctoral scholar Claire Mondro, the study's first author.

What he saw gave him chills. "The shape of the ripples could only have been formed under water that was open to the atmosphere and acted upon by wind," Mondro explained. The views below show these ...