BBC Four HD ·

Asteroids: Spark of Life?

Wednesday 21 October 2026, 20:00 – 20:50 UK time

Scientists explore if the destructive impacts of asteroids on Earth four billion years ago may have provided the essential ingredients needed for life to ignite on our planet.

Upcoming showings

Other scheduled episodes, repeats and reruns across all channels. All times are UK time.

BBC Four HD

Asteroids: Spark of Life?

Friday 23 October 2026, 02:45 – 03:40

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