Question

What do we call
System where a set of
planets continuously move. Star?​

Answer 1

Answer:

no it, not a set because time by time the star is destroyed

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Answer 2

${\huge{\sf{\red{\underline{\underline{ ❥Barycenter. }}}}}}$

Planets and stars actually orbit around their common center of mass. This common center of mass is called the barycenter.