Many are the size of pots or baskets, and almost all of them look like roughly rounded cubes, without any of the sharp facets you see in the Earth’s mountains, where so many rocks have recently broken. These rocks are not weathered or weather-beaten; they are sun-beaten. Billions of years of photon rain, unfiltered by clouds or even air, have slowly knocked the edges off these rocks. That withering weathering of photonic rain looks different from other kinds of weathering, as for instance by water rain.
