A cluster with a lot of Type O and B stars, but no bright K or M stars, is very

Name: A cluster with a lot of Type O and B stars, but no bright K or M stars, is very
Brand: Quizplus
Rating: 4.8 (47 reviews)

Question

Quizplus · Accepted Answer

Type O and B stars are massive and burn their fuel quickly, leading to relatively short lifespans. A cluster with many such stars but lacking in longer-lived, cooler K or M stars suggests it is young, as the more massive stars have not yet had time to evolve into later stages or end their life cycles.

A Cluster with a Lot of Type O and B