Secrets of Size: Atoms to Supergalaxies - BBC Four HD
Going Small (Season 1 Episode 1 of 2): Part one of two. Jim Al-Khalili explores the universe at the smallest scales. Secrets of Size: Atoms to Supergalaxies airs on BBC Four HD at 9:00 PM, Tuesday 9 April. Part one of two. Jim Al-Khalili explores the universe at the smallest scales
Source: tvguide.co.uk