The Size of the Universe: In Stages
17:25
The Planck Density: The Density of the Early Universe
15:39
The Planck Temperature: How hot can the Universe get?
22:31
What Holds the Universe Together? The Fundamental Forces
25:23
Le 0,1 % cosmique. Combien de planètes Terre dans l'Univers ?
33:12
The Cosmic Scale
15:01
What would we see at the speed of light?
30:18
How Big Is The Universe?
23:31