The Universe Season 4 Episode 7
The Search for Cosmic Clusters
They are the one-stop-shopping places for learning all about the nature and variety of stars in the Universe. They're unique, because in clusters, all the stars were born at about the same time, from the same material and all are at the same approximate distance from Earth. This means we can be sure that any differences among them are due to their true natures and not distorted by different distances from Earth and other factors.
4 - 12Extreme EnergyNov. 10, 2009- 4 - 11Science Fiction, Science FactNov. 03, 2009
- 4 - 10Pulsars & QuasarsOct. 27, 2009
- 4 - 9Liquid UniverseOct. 20, 2009
- 4 - 8Space WarsOct. 06, 2009
- 4 - 7The Search for Cosmic ClustersSep. 29, 2009
- 4 - 610 Ways to Destroy the EarthSep. 22, 2009
- 4 - 5The Hunt for Ringed PlanetsSep. 15, 2009
- 4 - 4Biggest BlastsSep. 08, 2009
- 4 - 3It Fell From SpaceSep. 01, 2009
- 4 - 2The Day the Moon Was GoneAug. 25, 2009
- 4 - 1Death StarsAug. 18, 2009
