one result of the analysis of the properties of clusters of galaxies that is very surprising and difficult to account for is that

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21-11-2022
Physics

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one result of the analysis of the properties of clusters of galaxies that is very surprising and difficult to account for is that

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contexto1025 contexto1025 · Answer 1 · 2022-11-25T00:01:38-05:00

The result of the analysis which is difficult to account for is that a)the galaxies in each cluster appear to be moving away from each other, indicating that the clusters probably came into existence in separate mini Big Bang explosions. So, correct option is a.

A galaxy cluster, or a cluster of galaxies, is the structure that consists of anywhere from hundreds to thousands of the galaxies that are bound together by the gravity, with typical masses ranging from 1014 to 1015 solar masses. They are actually second-largest known gravitationally bound structures in this universe after galaxy filaments and were believed to be the largest known structures in this universe until the 1980s.

Hence, correct option is a.

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(Complete question) is:

one result of the analysis of the properties of clusters of galaxies that is very surprising and difficult to account for is that

a. the galaxies in each cluster appear to be moving away from each other, indicating that the clusters probably came into existence in separate mini Big Bang explosions.

b. the mass of the easily visible matter (stars, and so on) appears to be insufficient to hold the systems together gravitationally.

c. each cluster is isolated from other clusters by the vast void that has probably been cleared out by the gravitational field of the cluster