Astronomy › Section P · Stars from adolescence to old age › Topic P.2
Star clusters
No one can watch a single star age, but a star cluster gives us hundreds or millions of stars born together. Because they share a birthday, a cluster is a ready-made experiment in how mass shapes a star's life.
In this topic
- Nature's laboratories
- Same distance, fair comparison
- Globular clusters
- Life in a crowd
- Worked example: how crowded is a globular cluster?
- Open clusters
- Worked example: why open clusters fall apart
- Associations
- Clusters at a glance
- Common mistakes to avoid
- Key takeaways
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