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Robert Irwin (1928–2023) was an American artist widely recognized as a pioneer of the Light and Space movement. Throughout his career, he explored the nature of perception and the relationship between viewers and their surroundings. Moving beyond traditional painting and sculpture, Irwin created immersive installations that used light, space, and subtle environmental changes to heighten sensory awareness. His innovative approach challenged conventional ideas about art and transformed the way audiences experience physical spaces. Today, Irwin is regarded as one of the most influential figures in contemporary American art.