From 1902 Méliès Sci-Fi to Modern Digital Art: the Evolution of Moon Illustration
The single most persistent error in lunar illustration is treating the orb as a flat sticker pasted onto a black canvas. The moon is a rough stone ball suspended in space. Because it lacks an atmosphere to scatter ambient photons, shadows on the surface remain brutally sharp. Light does not wrap gently as it does on Earth; instead, high points blaze in immediate white while depressions plunge into immediate black.
Capturing convincing spherical lighting and depth begins by establishing your light vector. Direct frontal sunlight produces a full moon illustration with very low surface contrast because shadows fall straight backward into depressions. The surface appears dominated by tone rather than relief. Conversely, side-lighting, found in a crescent moon sketch or first-quarter phase, exposes rugged lunar crater textures along the terminator, the boundary dividing the illuminated day side from the dark night side.
To establish volume, render a subtle core shadow that deepens toward the edges away from the primary light source. The moon's geometric albedo averages just 0.12, reflecting roughly as much light as worn asphalt. Brightness is an optical illusion born of contrast against the deep black of outer space. Artists who grasp this dynamic build the entire form from mid-tone greys, reserving pure white gouache or undiluted digital pixels strictly for the elevated rims of young impact craters like Tycho and Copernicus.