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26 Episodes 1977 - 1978
Episode 1
Episode 2
Episode 3
Episode 4
Episode 5

Episode 6

Episode 7
Episode 8
Episode 9
Episode 10
Episode 11
Episode 12
Episode 13
Episode 14
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.

Episode 15

Episode 16
Episode 17
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.
Episode 18
Episode 19
80 mins
Horizon examines the rise of the microprocessor and asks if automation presents a problem for the future of British industry.

Episode 20
Episode 21
Episode 22
Episode 23
Episode 24
Episode 25
Episode 26