Got this postcard from the Netherlands! You might be able to guess where this lovely landscape photo was taken – yes, that is the surface of my self-proclaimed homeland, Mars! Courtesy of the Viking 2 back in 1976, we get to see not only the surface of the Red Planet, but somewhere here there is also a layer of water ice among the rocks and soil. While I can confirm the presence of a Rita’s Italian Water Ice location in Mars from my childhood days, this “water ice” that I speak of just refers to the state of water on the planet. Virtually all water is in solid form, and most of it is underground. The main reason liquid water can’t exist on the planet is the thin atmosphere. This, combined with the sun’s warmth, causes it to turn from a solid state to a gas state. This process is known as sublimation (which you may have heard about in, say, biology class). An exception to this is the polar caps of the planet, where I think this photo may have been taken from since it states that the water ice is on the surface. It’s suuuuper thin, though – roughly one five-hundredth of a centimeter! I can also confirm that the flavored water ice proportions on Mars are not that measly – they’re quite generous with their scoops over there. Thank you so much for this super cool postcard!