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Harlow Shapley studied globular clusters and used the position of the clusters to locate the sun in the middle of our galaxy. He found out he was wrong but figured out that the sun was in one of the spiral arms in our galaxy
the halo
Quasars are related to supermassive black holes in the center of galaxies.
Those are called globular clusters, or star clusters.
In the Milky Way galactic halo, orbiting the galactic center in a long elliptical orbit around the galactic center
"The halo primarily contains individual old stars and clusters of old stars ("globular clusters"). It may be over 130,000 light years across. The halo also contains "dark matter," which is material that we cannot see but whose gravitational force can be measured." to shorten the answer - individual stars, clusters, and dark matter.
Because they have the most mass
The Milky Way Galaxy is a spiral galaxy and open clusters are only found in spiral or irregular galaxies.
There are two types of star clusters. Globular clusters are tight groups of hundreds of thousands of very old stars which are gravitationally bound, while open clusters, are more loosely clustered, generally containing less than a few hundred stars, and are usually very young.
center bulge. i found that answer in my science galaxy book. that is what it said.
there are 20 medical clusters in the directory
The youngest stars are protostars which are still forming within giant molecular clouds. The oldest stars in the universe are believed to be Population II stars, which are remnants from the early universe and can be found in globular clusters.