Light And DarkSeries 1, Episode 1 - Light

Professor Jim Al-Khalili shows how mathematicians and scientists such as Euclid, Galileo and Ole Roemer have used light to reveal almost everything we know about the universe.

Light And Dark was broadcast on BBC4 at Thursday 22 October 2026, 01:30. This episode was initially placed on Friday 6 March 2026.

Series 1Episode 1

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Light And Dark

Light And Dark is a TV show on BBC4. In this mind-bending series, Professor Jim Al-Khalili shows how by uncovering its secrets, scientists have used light to reveal the universe. The program has been available since 2026. A total of 2 episodes have been broadcast, most recently in October 2026.

Last broadcast:27/10/2026 at 23:35

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