9-th episode of 4-th season "The Universe"

What "The Universe" 9-th episode about

On alien planets it rains from the sky as scalding iron. On distant moons, even at hundreds of degrees below zero, they slosh around in lakes of methane. They can cover planets in oceans of electrified hydrogen metal. They churn in dead stars and even our planet. They're so rare in the universe, they almost don't exist, but these are the liquids of our Liquid Universe.

Episode number: 9

Episode name: "Liquid Universe"

Episode release date: 21 october 2009 at 01:00

Status: aired

Rating: 7.8