1. Satellite galaxyA satellite galaxy orbits a larger galaxy due to gravitational attraction. Although a galaxy is made of a large number of objects which are not connected to each other, it has a center of mass, which represents a weighted average (by mass) of the positions of each component object. This is similar to how an everyday object has a center of mass which is the weighted average of the positions of all its component atoms.
Read “Satellite galaxy” on English Wikipedia
Read “伴銀河” on Japanese Wikipedia
Read “Satellite galaxy” on DBpedia
Read “Satellite galaxy” on English Wikipedia
Read “伴銀河” on Japanese Wikipedia
Read “Satellite galaxy” on DBpedia
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