Question

most of the billion of stars in the universe are in huge clusters called​

Answer 1

Explanation:

Most stars are in systems of two or more stars. Open clusters are groups of young stars loosely held together by gravity. Globular clusters are spherical groups of old stars held tightly together by gravity. Galaxies are collections of millions to many billions of stars.

Answer 2

Explanation:

the group of billion of stars are called galaxy.

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