American Heritage® Dictionary of the English Language, Fourth Edition
- n. A loose, irregular grouping of stars that originated from a single nebula in the arms of a spiral galaxy. Also called galactic cluster.
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These user-created lists contain the word ‘open cluster’.
pretty open-ended here—terms, ideas, lingo, technologies and phenomena (real or postulated) that are, were, should be or could be used in speculative fiction
Looking for tweets for open cluster.