S06 Episode 1
Catastrophes that Changed the Planets
44 mins · Tue, 25 Oct 2011
S06 Episode 2
Nemesis: The Sun's Evil Twin
44 mins · Tue, 1 Nov 2011
S06 Episode 3
How the Solar System Was Made
44 mins · Tue, 8 Nov 2011
S06 Episode 4
Crash Landing on Mars
44 mins · Tue, 22 Nov 2011
S06 Episode 5
Worst Days on Planet Earth
43 mins · Tue, 29 Nov 2011
S06 Episode 6
UFO: The Real Deal
44 mins · Tue, 13 Dec 2011
S06 Episode 7
God and the Universe
44 mins · Tue, 20 Dec 2011