Constellations

Artist Joanie Lemercier makes three-dimensional light art in real time with geometric projections. She creates them out of thin air by first spraying an invisible mist of microscopic water droplets into the space, giving the projection something to reflect onto. The show called Constellations is 16 minutes long, but if you can't see it in person, this video gives us a small taste. (via Laughing Squid)