Star clusters are important to our study of stars because a. all stars formed in star clusters. b. the sun was once a member of a globular cluster. c. they give us a method to test our theories and models of stellar evolution. d. they are the only objects that contain Cepheid variables. e. all of the above are true.
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| a. |
all stars formed in star clusters.
|
|
| b. |
the sun was once a member of a globular cluster.
|
|
| c. |
they give us a method to test our theories and models of stellar evolution.
|
|
| d. |
they are the only objects that contain Cepheid variables.
|
|
| e. |
all of the above are true.
|
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