What "The Universe" 7-th episode about
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.
Episode number: 7
Episode name: "The Search for Cosmic Clusters"
Episode release date: 30 september 2009 at 01:00
Status: aired
Rating: 7.4
