About the theme

Sky Vocabulary runs cloud names and the rest of the celestial wash — cumulus, cirrus, stratus, nimbus, sunrise, sunset, dawn, dusk, aurora, meteor, comet, eclipse, twilight, constellation. The long compound names (cumulus, stratus, nimbus, constellation) anchor the bigger grids; the short ones (dusk, dawn, fog, moon, star) hide. A theme that reads as a single sweeping look at the sky.