| 释义 |
WordReference Random House Unabridged Dictionary of American English © 2024o′pen clus′ter, [Astron.]- Astronomya comparatively young, irregularly shaped group of stars, often numbering up to several hundred, and held together by mutual gravitation;
usually found along the central plane of the Milky Way and other galaxies.
Also, galactic cluster. Cf. globular cluster, stellar association. |