Star cluster | Wikipedia audio article
Channel: wikipedia tts
Date: 23/06/2019

This is an audio version of the Wikipedia Article:
https://en.wikipedia.org/wiki/Star_cluster


00:00:49 1 Globular cluster
00:03:09 1.1 Super star cluster
00:03:29 2 Open clusters
00:05:27 2.1 Embedded clusters
00:07:02 3 Intermediate forms
00:08:54 4 Astronomical significance of  star clusters
00:10:23 5 Nomenclature
00:11:16 6 See also



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SUMMARY
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Star clusters are very large groups of stars. Two types of star clusters can be distinguished: globular clusters are tight groups of hundreds to millions of old stars which are gravitationally bound, while open clusters, more loosely clustered groups of stars, generally contain fewer than a few hundred members, and are often very young. Open clusters become disrupted over time by the gravitational influence of giant molecular clouds as they move through the galaxy, but cluster members will continue to move in broadly the same direction through space even though they are no longer gravitationally bound; they are then known as a stellar association, sometimes also referred to as a moving group.
Star clusters visible to the naked eye include the Pleiades (M45), Hyades, and the Beehive Cluster (M44).