A star cluster with a lot of hot, blue stars must be relatively young.

Name: A star cluster with a lot of hot, blue stars must be relatively young.
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Question

Quizplus · Accepted Answer

Hot, blue stars are massive and burn through their nuclear fuel quickly, meaning they have short lifespans. Therefore, a cluster with many such stars must be relatively young, as these stars have not yet had time to evolve into older, cooler stars.

A Star Cluster with a Lot of Hot, Blue Stars