New research shows that dry ice blocks, not water or life, may be responsible for the mysterious gullies carved into Mars’ ...

Blocks of carbon dioxide ice appear to carve mysterious gullies on Mars as they melt down dune slopes and blast away sand.

Scientists suggest that dry ice on Mars may move and burrow beneath the surface, creating patterns similar to sandworms from Dune and shedding light on the planet’s changing landscape.

For years, scientists believed carbon dioxide ice might play a role in shaping Mars’ surface. However, no one had ever ...