- Astro 1 Unit 4 Flashcards | Quizlet
Why do we think there is a lot of dark matter in clusters of galaxies? Individual galaxies are moving so fast that they could not be held together by the gravity of visible matter
- What is the difference between a globular star cluster and an open star . . .
Globular clusters are old, spherical, and contain many stars Open clusters are younger, less dense, and have irregular shapes Astronomers study both to learn about star formation and
- Star Clusters: Inside the Universe’s Stellar Collections
Found in irregular galaxies and spiral galaxies like the Milky Way, open clusters contain both old and young stars and are generally much younger than globular clusters – typically they are less than a billion years old
- Globular cluster - Wikipedia
Star clusters were formerly thought to consist of stars that all formed at the same time from one star-forming nebula, but nearly all globular clusters contain stars that formed at different times, or that have differing compositions
- 22. 2 Star Clusters – Astronomy
As we will see in the next section of this chapter, globular clusters contain only very old stars, whereas open clusters and associations contain young stars Globular clusters were given this name because they are nearly symmetrical round systems of, typically, hundreds of thousands of stars
- Globular Clusters | ASTRO 801: Planets, Stars, Galaxies, and the Universe
Globular clusters are very massive objects that contain hundreds of thousands or perhaps a million stars The HR diagram for a typical globular cluster looks very different than that of an open cluster There are no Main Sequence stars of types OBAF, but there are many red giants
- Open and Globular Star Clusters - Universe Guide
Although most Globular Clusters contain white and yellow stars, there have been a few blue stars among the clusters Globular Clusters tend to be found nearer the Galactic Centre of the galaxy, whereas open ones tend to be further out
- Globular cluster | Astronomy, Star Formation Galaxies | Britannica
Globular cluster, a large group of old stars that are closely packed in a symmetrical, somewhat spherical form Globular clusters, so called because of their roughly spherical appearance, are the largest and most massive star clusters
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