Collin Parson hit it out of the park with Robert Mangold Retrospective: Time, Space and Motion, a show that's still open in the entire set of galleries on the lower level of the Arvada Center for the Arts. The center's exhibition designer, the twenty-something Parson served as curator of this show as well: The son of sculptor Chuck Parson, he met Mangold, the dean of contemporary sculpture in Colorado, when he was a child. Parson brought in a timeline to map out Mangold's long and distinguished career; the exhibit includes pieces from his many different series, notably the spherical whirligigs of "Anemotive Kinetics," as well as sketches, videos, clippings and photos. As a result, it's a full-tilt retrospective that takes the viewer through the decades of Mangold's long and illustrious career, reflecting all his various musings on space and movement.