The Night Sky, Explainedby Dmitry Shteynbuk
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Home/Glossary/Open cluster
Beyond the SunDefinedTerm

Open cluster

A loose group of a few hundred to a few thousand stars born together.

The Pleiades and the Hyades are the best-known examples.

Used in these guides

  • How a Star Is BornHow stars work
  • The Milky Way: Reading Our Own Galaxy from Inside ItBeyond the Sun
  • Nebulae: The Four Kinds and How to See ThemBeyond the Sun
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The Night Sky, Explained — by Dmitry Shteynbuk, Miami, Florida

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