Cold as (Dry) Ice on Mars - SciTechDaily

Every winter, a layer of carbon dioxide frost (dry ice) forms on the surface of Mars. At its greatest extent in mid-winter, this frost reaches from the poles down to the middle latitudes, until it is too warm and sunny to persist. In most places, this is arou…

This image of a crater near 37 degrees south latitude on Mars was captured in the middle of winter in Mars Southern Hemisphere. Patchy sparkling frost blankets the south-facing slope, which has taken… [+946 chars]

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