Dry ice frosts a Mars crater

The white markings here are bright residual carbon dioxide ice deposits – dry ice – on the south-facing rim of a pit crater on Mars.

View larger. | The European Space Agency’s ExoMars orbiter acquired the images to create this color composite on September 2, 2018. It shows the south-facing rim of a pit crater at 68 degrees south in the Sisyphi Planum region of Mars, when that region was in late spring. The image measures 20 x 8 km (12 x 5 miles) and the resolution is 4.5 m/pixel. North is 45 degrees on the upper left. Read more about this image via ESA.

Deborah Byrd