Globular clusters
A) are young formations and always contain many hot O- and B-type stars.
B) are old formations and always contain only old, red stars.
C) can be formed in collisions of galaxies and thus can be young if the collision occurred recently.
D) are continually forming in spiral galaxies, like the Milky Way, and thus they show a great range of ages in any one galaxy.

Question

Quizplus · Accepted Answer

Globular clusters are generally old formations, consisting mostly of old stars, but they can indeed be formed in the collisions of galaxies, which means they can be young if the collision occurred recently. This is an exception to their typical characterization as ancient structures.

Globular Clusters