Cosmos Season 1 Episode 3

There was a time, not so long ago, when natural events could only be understood as gestures of divine displeasure. We will witness the moment that all changed; but first, the Ship of the Imagination is in the brooding, frigid realm of the Oort Cloud, where a trillion comets wait. Our Ship takes us on a hair-raising ride, chasing a single comet through its million-year plunge towards the Sun.