stellar association


noun Astronomy.

a sparsely populated group of between 10 and 1000 young stars of similar spectral type and common origin that are moving too fast to form a permanent, gravitationally bound system.

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What does “blatherskite” mean?
Also called association of stars, association.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020