Compared with the Population I stars in the disk of our galaxy, the Population II stars in globular clusters
A)are generally younger.
B)have about the same age distribution.
C)are generally older.
D)Any of these choices may be correct in a particular cluster.

Question

Quizplus · Accepted Answer

Populations II stars in globular clusters are generally older than Population I stars. Population II stars are characterized by lower amounts of heavy elements, indicating that they formed earlier in the history of the universe when heavy elements were less abundant. Globular clusters also tend to be very old, with ages of around 10-13 billion years, which further supports the idea that the Population II stars within them are older than Population I stars in the disk of our galaxy.

Compared with the Population I Stars in the Disk of Our