|Episode Online Video|
S01, E01 (First Aired:
How the universe came into existence out of nothing and grew from a miniscule point, smaller than an atomic particle.
S04, E02 (First Aired:
There is a planet in the solar system covered in thick, dense clouds and roasted by colossal temperatures, and is a vision of Earth's future; taking a look at Venus to understand how Earth will be destroyed.
S04, E05 (First Aired:
Discovering how life on Earth came to be; the possibility that life on Earth come from another planet.
S02, E03 (First Aired:
Discovering an extraordinary zoo of planetary nightmares outside our own planet.