1:23:33

1+ Hour of Brian Cox on the Size and Scale of the Universe to Sleep Deeply

1:18:30

Brian Cox: Why black holes could hold the secret to time and space | Full Interview

1:18:54

1 Hour of Brian Cox on Why Time Only Moves Forward - Fall Asleep Fast

3:02:36

3+ Hours of Brian Cox Explaining Einstein's Theory of Relativity - Fall Asleep Fast

1:43:38

2+ Hours of Brian Cox on the Biggest Galaxies Ever Discovered Fall Asleep Fast