Changing light and the effect of light on architecture are two recurring themes in Danish-Icelandic artist Olafur Eliasson’s work and in his new sculpture ‘Return of the Arctic light sphere,’ on view in its own gallery at Tanya Bonakdar Gallery in Chelsea. A strong LED light inside the sphere passes through blue glass and Fresnel glass, a material once used in lighthouses to increase the intensity of light. Walk around the suspended sphere and the shadows change constantly, creating mesmerizing effects and giving viewers pause to consider the complexities of the sculpture’s geometry. (On view Tues – Fri by appointment through August 28th. Masks and social distancing required.)