a hoop system of star is
Answers
The system is divided into 3 type: Visual binaries;spectroscopic binaries; eclipsing binaries. A multiple star consists of three or more stars which appear from the Earth to be close to one another in the sky. ... The other type is just stars that are close optically. Only the first type is called multiple star systems.
Answer:
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Explanation:
Star clusters are large groups of stars. Two types of star clusters can be distinguished: globular clusters are tight groups of hundreds to millions of old stars which are gravitationally bound, while open clusters, more loosely clustered groups of stars, generally contain fewer than a few hundred members, and are often very young. Open clusters become disrupted over time by the gravitational influence of giant molecular clouds as they move through the Galaxy, but cluster members will continue to move in broadly the same direction through space even though they are no longer gravitationally bound; they are then known as a stellar association, sometimes also referred to as a moving group.