Documentary about the physiological and psychological effects of living in a zero-g space station, built around NASA library film from Project Skylab. Skylab astronauts and other experts discuss the ultimate limitation on spaceflight duration, as well as the exhilaration of being free of gravity.
Covers the development and progress of lasers including topics of medical uses, nuclear fusion, holograms, spectroscopy, time standards, military weaponry, data recording media, communications and fibre optics.