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.
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Opensubtitles
4 - 1Death Stars Aug. 18, 2009
4 - 2The Day the Moon Was Gone Aug. 25, 2009
4 - 3It Fell From Space Sep. 01, 2009
4 - 4Biggest Blasts Sep. 08, 2009
4 - 5The Hunt for Ringed Planets Sep. 15, 2009
4 - 610 Ways to Destroy the Earth Sep. 22, 2009
4 - 7The Search for Cosmic Clusters Sep. 29, 2009
4 - 8Space Wars Oct. 06, 2009
4 - 9Liquid Universe Oct. 20, 2009
4 - 10Pulsars & Quasars Oct. 27, 2009
4 - 11Science Fiction, Science Fact Nov. 03, 2009
4 - 12Extreme Energy Nov. 10, 2009
