![](https://images.ecency.com/DQmPpAD77yfSmAJa7qNhhg71XctRfvv7iPHkoKz29DN9qJr/82c0a4e6_285b_498a_80c2_d4d872dd6e5e.jpeg)


 STAR CLUSTERS

 b) Galaxy clusters are distributed over the entire circumference of the Milky Way;  globular clusters are almost completely absent in the northern celestial hemisphere.

 c) Galaxy clusters consist of tens or hundreds of stars, rarely thousands;  globular systems contain tens or hundreds of thousands of stars.

 d) The mean radial velocity of galaxy clusters is known to be low, rarely exceeding forty kilometers per second: globular clusters move on average with a radial velocity of more than one hundred kilometers per second.

 e) Galaxy clusters, at least two or three hundred cataloged, almost all located within four thousand light-years from the Sun.  All globular clusters are further than ten thousand light-years, and at least a third of them are further than one hundred light-years.  thousand

 f) Galaxy clusters are irregular in shape, of different sizes, and contain a different number of stars: globular clusters, with a few exceptions, seem to be of comparable size and of comparable general brightness, leading one to think that the number of stars in them is approximately the same.