A closer look

Winter wonderland on Mars looks a lot more like a low-resolution video game. While Earth snow is made of water that freezes into beautiful, six-sided hexagonal crystals, Martian snow is formed from freezing carbon dioxide. Because molecules of dry ice arrange themselves in a face-centered cubic lattice, the resulting snowflakes are tiny, harsh cubes. It completely ruins the festive aesthetic of catching a snowflake on your tongue, mostly because it would freeze your throat solid.