Cosmo Leap Ʃ is one of the most compact planetarium projectors in the world and provides a wide variety of functions for giving detailed lectures about the starry sky in small-scale dome auditoriums. A combination of ultra-bright LED lights and optical technology ensures high brilliance. The exterior shell of the projection ball has an open design in order to give observers an impression of the optomechanics inside and to spark the spirit of discovery, especially in children.