Everything and Nothing: Part 1, "Everything"

This documentary, the first of a pair, follows physicist Jim Al-Khalili as he asks a childlike question with a vast answer: why does it get dark at night? The inquiry opens onto the size and boundaries of the known universe and our understanding of space. The film turns everyday wonder into a serious scientific journey. It is a rewarding watch for anyone interested in physics, astronomy, and the true scale of the cosmos. Free to watch in HD on Dr Documentary.

Courtesy of Documentary on YouTube. Watch on YouTube ↗

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