Tomorrow, June 21, is the summer solstice. On the occasion, the Solomon R. Guggenheim Museum will open the doors on a major solo show of the work of James Turrell, called simply James Turrell. It’s a fitting day to open an exhibition on the American artist. Since the 1960s, Turrell has developed a diverse body of work that uses light as material and medium. The centerpiece of the show is Aten Reign, a site-specific installation that fills Frank Lloyd Wright’s famous rotunda. Made from a series of interlocking fabric cones that relate to the Guggenheim’s interior ramps, Aten Reign interlaces the prevailing daylight with subtly changing color fields produced by concealed LED fixtures. Viewed from below, on reclining benches or lying flat on the floor, with the gentle bubbling of the Guggenheim’s fountain providing aural accompaniment, the installation provides a meditative, perception altering experience.