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 March 2026.
Last episode
Light And Dark
Professor Jim Al-Khalili tells the story of how we went from thinking we were close to a complete understanding of the universe to realising we had seen almost none of it.
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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.