S1.E1 ∙ Light Sun, Nov 17, 2013 Prof. Jim Al-Khalili explains the properties of light, stories behind these discoveries and how immensely light changed our understanding of the universe. 8 /10
S1.E2 ∙ Dark Sun, Nov 24, 2013 Prof. Jim Al-Khalili explains the celestial relationship between light and dark, and how darkness covers most of our universe. 8.4 /10