Smithsonian Planetarium ProjectorThe universe is immeasurable and always expanding. Even the most sophisticated instruments created by top scientists to explore outer space have failed to measure how massive it actually is. Now, with the Smithsonian Planetarium Projector, your son or daughter can bring the vast expanses of the universe into his or her own bedroom! Featuring full 360 degree motorized rotation, any surface in a darkened room can be filled with nebulae, galaxies, and