Season
Season 9 Episode
- Season 4 Death Stars
- Season 4 The Day the Moon Was Gone
- Season 4 It Fell From Space
- Season 4 Biggest Blasts
- Season 4 The Hunt for Ringed Planets
- Season 4 10 Ways to Destroy the Earth
- Season 4 The Search for Cosmic Clusters
- Season 4 Space Wars
- Season 4 Liquid Universe
- Season 4 Pulsars & Quasars
- Season 4 Science Fiction, Science Fact
- Season 4 Extreme Energy
The Universe - Season 4 Episode 7 The Search for Cosmic Clusters
7.90 45 minutes 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.
