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What are the motions of stars relative to each other in a globular or open cluster? Does the cluster move as a unit over time? | Astronomy.com
![Why are globular clusters not considered galaxies? How far apart are their stars, and do their magnetic fields affect each other? Can a cluster's stars have planets, and would you need sunglasses Why are globular clusters not considered galaxies? How far apart are their stars, and do their magnetic fields affect each other? Can a cluster's stars have planets, and would you need sunglasses](http://astronomy.com/~/media/2B53826AF7634A168D21D8340C0B6E05.jpg)
Why are globular clusters not considered galaxies? How far apart are their stars, and do their magnetic fields affect each other? Can a cluster's stars have planets, and would you need sunglasses
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