The Science of Doctor Who Clips

1. Black holes and event horizons (pt 2/2)

   Duration: 07:29

2. The nature of light

   Duration: 06:35

3. Are we alone in the universe?

   Duration: 07:13

4. Black holes and event horizons (pt 1/2)

   Duration: 06:11

5. Special relativity and the constant speed of light

   Duration: 05:56

6. Brian Cox tests the Doctor

   Duration: 01:09

7. The Science of Doctor Who: Trail

   Duration: 00:25