Housed in a unique slipcase of Spencer Finch's design, this first monograph is as visually stunning and thought-provoking as the work within. The confounding question of the title refers to Ludwig Wittgenstein's philosophical "propositions," and reflects the inquisitive nature of Finch's practice and his interests in the limits of thought and vision. What Time is it on the Sun? presents 120 color photographs and accompanying texts documenting 40 varied works, plus three essays on the literary, philosophical and scientific inspirations that drive Finch's intelligent and quixotic musings. A conceptual artist and a romantic, he examines the problems of representation through subjects as elusive as the Milky Way and wind, rendered in unexpected materials ranging from Tang to invisible ink. Working with light and color, Finch often focuses on historically charged locales as he explores the shifting terrain of desire and memory, highlighting the role subjectivity plays in shaping our perceptions.