In order to understand star clusters,we need to be able to estimate their ages.What technique do scientists use for this?

Question

Quizplus · Accepted Answer

Scientists use the technique of finding the main-sequence turnoff point of the stars in a star cluster to estimate its age. The main-sequence turnoff point is the point where stars leave the main sequence and start evolving into different stages of their lives. The turnoff point is dependent on the about-to-expire hydrogen fuel of the most massive stars in the cluster, which gives an estimate of the cluster's age.

In Order to Understand Star Clusters,we Need to Be Able