Huge shells of frozen carbon dioxide at Mars' south polar cap resulted in subsurface meltwater, which fed a huge system of rivers, lakes and even a sea, a new study suggests.

On ancient Mars, carbon dioxide ice kept the water running. Here's how

Source: space
Source Link: https://www.space.com/the-universe/mars/on-ancient-mars-carbon-dioxide-ice-kept-the-water-running-heres-how