You searched for: “cluster
Word Entries containing the term: “cluster
globular cluster
A spherical collection of star, the concentration of which increases greatly toward the center.

The stars are probably of the same age, and the clusters as a whole move in highly elliptical orbits that take them high above the galactic center.

This entry is located in the following unit: Astronomy and related astronomical terms (page 12)
open cluster
A loose cluster of young stars of high luminosity found in or near the plane of the galaxy.
This entry is located in the following unit: Astronomy and related astronomical terms (page 17)