The Universe · SEASON 4
Liquid Universe
Episode 9 · 2009-10-20

- Documentary
Episode overview
On alien planets, they rain from the sky as scalding iron. On distant moons, even at hundreds of degrees below zero, they slosh around in pristine lakes of methane. They can cover entire planets in miles-deep oceans of electrified hydrogen metal. Or erupt on alien worlds through miles-high geysers. They churn in the interiors of dead stars and even our own planet. They're so rare in the universe, they almost don't exist, but these are the magical liquids of our Liquid Universe.
45 minutes
Season 4 episodes
1. Death Stars2009-08-18
2. The Day the Moon Was Gone2009-08-25
3. It Fell From Space2009-09-01
4. Biggest Blasts2009-09-08
5. The Hunt for Ringed Planets2009-09-15
6. 10 Ways to Destroy the Earth2009-09-22
7. The Search for Cosmic Clusters2009-09-29
8. Space Wars2009-10-06
9. Liquid Universe2009-10-20
10. Pulsars & Quasars2009-10-27
11. Science Fiction, Science Fact2009-11-03
12. Extreme Energy2009-11-10