Now, where were we? In space, of course. Space in art might be deep, shallow, even intentionally flat. One hears space in an unvoiced bar of music, or within a complex chord. The distances in landscape can be rendered in a few precisely placed lines or the shifting hues of atmosphere. Space defines the margins of a page, the matrix in which dances are diagrammed—and even, in the modern age, the void through which visitors come flying to earth from somewhere far beyond.